29 results on '"Ching, Jenny"'
Search Results
2. Sense of place, subjective well-being, and the influence of housing and neighbourhood: A comparative study of two marginalised districts in Hong Kong
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Ching Yeung Katherine Li, Lok Ching Jenny Leung, Mee Kam Ng, Wing Yan Charis Leung, Tsz Chun Arthur Yeung, Chun Hei Alex Cheng, Hendrik Tieben, and Mei-Po Kwan
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Sense of place ,Subjective well-being ,Housing ,Neighbourhood ,Hong Kong ,Human ecology. Anthropogeography ,GF1-900 ,Social sciences (General) ,H1-99 - Abstract
This paper investigates the associations between the multiple dimensions of individuals’ sense of place and subjective well-being. The impact of objective and subjective housing and neighbourhood attributes on sense of place was also examined. Using a questionnaire and government spatial datasets, data were collected from residents of two marginalised communities in Hong Kong, Sham Shui Po and Tin Shui Wai. The results reveal positive relationships between various facets of sense of place and subjective well-being that vary in strength in different urban forms. Among the attributes of housing and neighbourhood analysed, housing satisfaction is found to be the strongest predictor of sense of place. The study further verifies the use of a synthesised three-dimensional scale to measure sense of place. It also has important implications for urban planning policies and practices for high-density cities.
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- 2023
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3. The Comparative Effectiveness of Diabetes Prevention Strategies to Reduce Postpartum Weight Retention in Women With Gestational Diabetes Mellitus: The Gestational Diabetes’ Effects on Moms (GEM) Cluster Randomized Controlled Trial
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Ferrara, Assiamira, Hedderson, Monique M, Brown, Susan D, Albright, Cheryl L, Ehrlich, Samantha F, Tsai, Ai-Lin, Caan, Bette J, Sternfeld, Barbara, Gordon, Nancy P, Schmittdiel, Julie A, Gunderson, Erica P, Mevi, Ashley A, Herman, William H, Ching, Jenny, Crites, Yvonne, and Quesenberry, Charles P
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Biomedical and Clinical Sciences ,Health Services and Systems ,Public Health ,Health Sciences ,Reproductive Medicine ,Clinical Research ,Clinical Trials and Supportive Activities ,Obesity ,Diabetes ,Health Services ,Nutrition ,Prevention ,Comparative Effectiveness Research ,6.7 Physical ,Evaluation of treatments and therapeutic interventions ,3.1 Primary prevention interventions to modify behaviours or promote wellbeing ,Prevention of disease and conditions ,and promotion of well-being ,Metabolic and endocrine ,Reproductive health and childbirth ,Good Health and Well Being ,Adult ,Behavior Therapy ,Body Mass Index ,Cluster Analysis ,Diabetes Mellitus ,Diabetes ,Gestational ,Female ,Humans ,Life Style ,Middle Aged ,Postpartum Period ,Pregnancy ,Risk Reduction Behavior ,Weight Loss ,Young Adult ,Medical and Health Sciences ,Endocrinology & Metabolism ,Biomedical and clinical sciences ,Health sciences - Abstract
ObjectiveTo compare the effectiveness of diabetes prevention strategies addressing postpartum weight retention for women with gestational diabetes mellitus (GDM) delivered at the health system level: mailed recommendations (usual care) versus usual care plus a Diabetes Prevention Program (DPP)-derived lifestyle intervention.Research design and methodsThis study was a cluster randomized controlled trial of 44 medical facilities (including 2,280 women with GDM) randomized to intervention or usual care. The intervention included mailed gestational weight gain recommendations plus 13 telephone sessions between 6 weeks and 6 months postpartum. Primary outcomes included the following: proportion meeting the postpartum goals of 1) reaching pregravid weight if pregravid BMI
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- 2016
4. A pragmatic cluster randomized clinical trial of diabetes prevention strategies for women with gestational diabetes: design and rationale of the Gestational Diabetes’ Effects on Moms (GEM) study
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Ferrara, Assiamira, Hedderson, Monique M, Albright, Cheryl L, Brown, Susan D, Ehrlich, Samantha F, Caan, Bette J, Sternfeld, Barbara, Gordon, Nancy P, Schmittdiel, Julie A, Gunderson, Erica P, Mevi, Ashley A, Tsai, Ai-Lin, Ching, Jenny, Crites, Yvonne, and Quesenberry, Charles P
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Biomedical and Clinical Sciences ,Health Services and Systems ,Public Health ,Health Sciences ,Reproductive Medicine ,Pediatric ,Obesity ,Diabetes ,Clinical Trials and Supportive Activities ,Clinical Research ,Health Services ,Perinatal Period - Conditions Originating in Perinatal Period ,Prevention ,Nutrition ,Comparative Effectiveness Research ,Prevention of disease and conditions ,and promotion of well-being ,3.1 Primary prevention interventions to modify behaviours or promote wellbeing ,Reproductive health and childbirth ,Cardiovascular ,Metabolic and endocrine ,Good Health and Well Being ,Adolescent ,Adult ,Blood Glucose ,Body Mass Index ,California ,Diabetes Mellitus ,Type 2 ,Diabetes ,Gestational ,Diet ,Directive Counseling ,Female ,Health Promotion ,Humans ,Hypoglycemic Agents ,Life Style ,Motor Activity ,Patient Education as Topic ,Postnatal Care ,Pregnancy ,Prenatal Care ,Research Design ,Telephone ,Weight Gain ,Young Adult ,GDM ,Diabetes prevention ,Cluster randomized clinical trial ,Lifestyle intervention ,Comparative effectiveness ,Nursing ,Paediatrics and Reproductive Medicine ,Public Health and Health Services ,Obstetrics & Reproductive Medicine ,Reproductive medicine ,Midwifery - Abstract
BackgroundWomen with gestational diabetes (GDM) are at high risk of developing diabetes later in life. After a GDM diagnosis, women receive prenatal care to control their blood glucose levels via diet, physical activity and medications. Continuing such lifestyle skills into early motherhood may reduce the risk of diabetes in this high risk population. In the Gestational Diabetes' Effects on Moms (GEM) study, we are evaluating the comparative effectiveness of diabetes prevention strategies for weight management designed for pregnant/postpartum women with GDM and delivered at the health system level.Methods/designThe GEM study is a pragmatic cluster randomized clinical trial of 44 medical facilities at Kaiser Permanente Northern California randomly assigned to either the intervention or usual care conditions, that includes 2,320 women with a GDM diagnosis between March 27, 2011 and March 30, 2012. A Diabetes Prevention Program-derived print/telephone lifestyle intervention of 13 telephonic sessions tailored to pregnant/postpartum women was developed. The effectiveness of this intervention added to usual care is to be compared to usual care practices alone, which includes two pages of printed lifestyle recommendations sent to postpartum women via mail. Primary outcomes include the proportion of women who reach a postpartum weight goal and total weight change. Secondary outcomes include postpartum glycemia, blood pressure, depression, percent of calories from fat, total caloric intake and physical activity levels. Data were collected through electronic medical records and surveys at baseline (soon after GDM diagnosis), 6 weeks (range 2 to 11 weeks), 6 months (range 12 to 34 weeks) and 12 months postpartum (range 35 to 64 weeks).DiscussionThere is a need for evidence regarding the effectiveness of lifestyle modification for the prevention of diabetes in women with GDM, as well as confirmation that a diabetes prevention program delivered at the health system level is able to successfully reach this population. Given the use of a telephonic case management model, our Diabetes Prevention Program-derived print/telephone intervention has the potential to be adopted in other settings and to inform policies to promote the prevention of diabetes among women with GDM.
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- 2014
5. Development of a methodology for evaluating product service ssytem as a competitive strategy for the Singapore manufacturing industry
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Ang, Gim Ching Jenny and Baines, Tim
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338.0068 - Abstract
Product Service System (PSS) promotes the idea of selling value in use via an integrated combination of products and services. It has been regarded by many economic policy makers and researchers as a potential competitive strategy for the manufacturing industry in the developed country to gain competitiveness. Although currently there are a few PSS methodologies developed for the design and implementation of PSS, their approach is mainly biased towards using PSS as a tool to gain sustainability and to reduce environmental impact from selling more services instead of selling the physical product for example. In view of this, this research sets out to present a PSS Evaluation (PSSE) methodology, aiming at assisting manufacturer in assessing whether the adoption of a PSS is a good strategy from the point of competitiveness. The research programme begins with the identification of the requirements set of the PSSE methodology by gaining relevant knowledge from the literature and the Singapore‟s Manufacturing Industry. Existing potential methodologies were then selected against the requirements set to form the conceptual base of the new PSSE methodology. The developed new PSSE methodology was tested using two case studies during the primary evaluation and another four case studies during the secondary evaluation. The main contribution of this research is the development of a feasible, usable and useful methodology that can assist the manufacturer in assessing whether the adoption of a new PSS is a competitive strategy. The new seven-stage PSSE methodology provides well-constructed stages which are specially designed to be delivered via a facilitated workshop. This research has therefore made a significant contribution to the knowledge of the concept of PSS, and its application in the manufacturing industry in the area of methodology development.
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- 2010
6. Signature Optical Cues: Emerging Technologies for Monitoring Plant Health
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Anand K. Asundi, Bingqing Li, Pek Ching Jenny Chong, and Oi Wah Liew
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Thermography ,fluorescence ,leaf reflectance ,plant stress ,CIE color space ,red edge ,phytosensors ,transgenic plants ,reporter genes ,inducible promoters ,remote sensing. ,Chemical technology ,TP1-1185 - Abstract
Optical technologies can be developed as practical tools for monitoring plant health by providing unique spectral signatures that can be related to specific plant stresses. Signatures from thermal and fluorescence imaging have been used successfully to track pathogen invasion before visual symptoms are observed. Another approach for noninvasive plant health monitoring involves elucidating the manner with which light interacts with the plant leaf and being able to identify changes in spectral characteristics in response to specific stresses. To achieve this, an important step is to understand the biochemical and anatomical features governing leaf reflectance, transmission and absorption. Many studies have opened up possibilities that subtle changes in leaf reflectance spectra can be analyzed in a plethora of ways for discriminating nutrient and water stress, but with limited success. There has also been interest in developing transgenic phytosensors to elucidate plant status in relation to environmental conditions. This approach involves unambiguous signal creation whereby genetic modification to generate reporter plants has resulted in distinct optical signals emitted in response to specific stressors. Most of these studies are limited to laboratory or controlled greenhouse environments at leaf level. The practical translation of spectral cues for application under field conditions at canopy and regional levels by remote aerial sensing remains a challenge. The movement towards technology development is well exemplified by the Controlled Ecological Life Support System under development by NASA which brings together technologies for monitoring plant status concomitantly with instrumentation for environmental monitoring and feedback control.
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- 2008
7. Using Stated Preference Valuation to Support Sustainable Marine Fishery Management
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Tzu-Ming Liu, Ho-Ching Jenny Yuan, and I-Jean Chen
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0106 biological sciences ,media_common.quotation_subject ,Ceteris paribus ,discrete choice experiments ,Geography, Planning and Development ,TJ807-830 ,Certification ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,TD194-195 ,01 natural sciences ,Renewable energy sources ,Microeconomics ,Willingness to pay ,ecolabel ,Veblen effect ,Quality (business) ,GE1-350 ,prices as signals of product quality ,0105 earth and related environmental sciences ,media_common ,Environmental effects of industries and plants ,Renewable Energy, Sustainability and the Environment ,business.industry ,010604 marine biology & hydrobiology ,MSC-certified fishery ,Marketing strategy ,Preference ,Product (business) ,Environmental sciences ,Business ,Ecolabel - Abstract
This study uses a random parameters logit (RPL) model to estimate the Taiwanese preference for northern shrimp (NS) products (NSP) with the Marine Stewardship Council (MSC) label. The estimated results show that, ceteris paribus, the marginal willingness to pay (MWTP) of Taiwanese consumers for NSP with the MSC label is up to New Taiwan dollar (NTD) 84.86 in comparison to products without the label. Moreover, the price of MSC-labeled NSP has a positive effect on the quantity demanded by Taiwanese consumers. They also prefer products in smaller packages and with shorter certification periods. The positive effect can be explained by the Veblen effect or the fact that sometimes prices are perceived as signals of product quality. However, the effects of preference for smaller packages and shorter certification periods are minimal compared with the effects of preference for MSC-labeled products. When consumers are unfamiliar with products or labels, a high price is a viable marketing strategy. However, the advantage cannot sustain the promotion of products and labels.
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- 2021
8. Referral to telephonic nurse management improves outcomes in women with gestational diabetes
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Ferrara, Assiamira, Hedderson, Monique M., Ching, Jenny, Kim, Catherine, Peng, Tiffany, and Crites, Yvonne M.
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- 2012
9. Using Stated Preference Valuation to Support Sustainable Marine Fishery Management
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Liu, Tzu-Ming, primary, Chen, I-Jean, additional, and Yuan, Ho-Ching Jenny, additional
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- 2021
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10. Epicardial fat in heart failure with reduced versus preserved ejection fraction
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Tromp, Jasper, primary, Bryant, Jennifer A., additional, Jin, Xuanyi, additional, Woerden, Gijs, additional, Asali, Salma, additional, Yiying, Han, additional, Liew, Oi Wah, additional, Ching, Jenny Chong Pek, additional, Jaufeerally, Fazlur, additional, Loh, Seet Yoong, additional, Sim, David, additional, Lee, Sheldon, additional, Soon, Dinna, additional, Tay, Wan Ting, additional, Packer, Milton, additional, Veldhuisen, Dirk J., additional, Chin, Calvin, additional, Richards, A. Mark, additional, and Lam, Carolyn S.P., additional
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- 2021
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11. A Pregnancy and Postpartum Lifestyle Intervention in Women With Gestational Diabetes Mellitus Reduces Diabetes Risk Factors : A feasibility randomized control trial
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Ferrara, Assiamira, Hedderson, Monique M., Albright, Cheryl L., Ehrlich, Samantha F., Quesenberry, Charles P., Jr., Peng, Tiffany, Feng, Juanran, Ching, Jenny, and Crites, Yvonne
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- 2011
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12. Comparison of glyburide and insulin for the management of gestational diabetes in a large managed care organization
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Jacobson, Gavin F., Ramos, Gladys A., Ching, Jenny Y., Kirby, Russell S., Ferrara, Assiamira, and Field, D. Robin
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- 2005
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13. Mechanism of NS2B-Mediated Activation of NS3pro in Dengue Virus: Molecular Dynamics Simulations and Bioassays
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Oi Wah Liew, Weiliang Zhu, Gang Chen, Siew Hui Lee, Chum Mok Puah, Kaixian Chen, Zhili Zuo, Hualiang Jiang, and Pek Ching Jenny Chong
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Models, Molecular ,medicine.medical_treatment ,Molecular Sequence Data ,Immunology ,Mutagenesis (molecular biology technique) ,Plasma protein binding ,Viral Nonstructural Proteins ,Dengue virus ,medicine.disease_cause ,Microbiology ,Protein Structure, Secondary ,Cofactor ,Enzyme activator ,Virology ,Protein Interaction Mapping ,medicine ,Amino Acid Sequence ,chemistry.chemical_classification ,NS3 ,Protease ,biology ,Structure and Assembly ,Serine Endopeptidases ,Dengue Virus ,Protein Structure, Tertiary ,Kinetics ,Enzyme ,Biochemistry ,chemistry ,Insect Science ,biology.protein ,Biophysics ,Protein Binding - Abstract
The NS2B cofactor is critical for proteolytic activation of the flavivirus NS3 protease. To elucidate the mechanism involved in NS2B-mediated activation of NS3 protease, molecular dynamic simulation, principal component analysis, molecular docking, mutagenesis, and bioassay studies were carried out on both the dengue virus NS3pro and NS2B-NS3pro systems. The results revealed that the NS2B-NS3pro complex is more rigid than NS3pro alone due to its robust hydrogen bond and hydrophobic interaction networks within the complex. These potent networks lead to remodeling of the secondary and tertiary structures of the protease that facilitates cleavage sequence recognition and binding of substrates. The cofactor is also essential for proper domain motion that contributes to substrate binding. Hence, the NS2B cofactor plays a dual role in enzyme activation by facilitating the refolding of the NS3pro domain as well as being directly involved in substrate binding/interactions. Kinetic analyses indicated for the first time that Glu92 and Asp50 in NS2B and Gln27, Gln35, and Arg54 in NS3pro may provide secondary interaction points for substrate binding. These new insights on the mechanistic contributions of the NS2B cofactor to NS3 activation may be utilized to refine current computer-based search strategies to raise the quality of candidate molecules identified as potent inhibitors against flaviviruses.
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- 2009
14. 137: Glyburide treatment of A2 gestational diabetes in a large cohort study: risk factors for failure
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Misiak, Kristen, primary, Darbinian, Jeanne A., additional, Ching, Jenny Y., additional, Jacobson, Gavin F., additional, and Regenstein, Anne C., additional
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- 2016
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15. A His6-SUMO-eXact tag for producing human prepro-urocortin 2 in Escherichia coli for raising monoclonal antibodies
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Yin Mun Yip, Xin Yu Koh, A. Mark Richards, Oi Wah Liew, Yan Xia Ng, Yu Pei Peh, Le-Ann Hwang, Pek Ching Jenny Chong, Cui Xia Ang, and Wei Liu
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Protein Denaturation ,Saccharomyces cerevisiae Proteins ,medicine.drug_class ,Corticotropin-Releasing Hormone ,Recombinant Fusion Proteins ,Immunology ,Molecular Sequence Data ,Protein tag ,Monoclonal antibody ,medicine.disease_cause ,Chromatography, Affinity ,law.invention ,Injections ,Mice ,Affinity chromatography ,law ,Antibody Specificity ,Protein purification ,medicine ,Escherichia coli ,Immunology and Allergy ,Animals ,Humans ,Histidine ,Amino Acid Sequence ,Cloning, Molecular ,Protein Precursors ,Urocortins ,Mice, Inbred BALB C ,Chemistry ,Subtilisin ,Antibodies, Monoclonal ,Molecular biology ,Biochemistry ,Solubility ,Mutation ,Recombinant DNA ,Small Ubiquitin-Related Modifier Proteins ,Immunization ,Thioredoxin ,Oligopeptides ,Myc-tag ,Protein Binding - Abstract
This is a first report of recombinant production of human prepro-Urocortin 2 in Escherichia coli by N-terminal fusion with a triple His₆-SUMO-eXact tag and its subsequent use as an antigen for the production and screening of very high affinity monoclonal antibodies. The rationale for this combinatorial construct is that the His tag allows first step protein purification of insoluble and soluble proteins, the SUMO tag enhances protein expression level and solubility, while the eXact tag facilitates anion-triggered on-column cleavage of the triple tag to recover pure native proteins in a simple two-step protein purification procedure. Compared with an eXact fusion alone, the presence of the SUMO moiety enhanced overall expression levels by 4 to 10 fold but not the solubility of the highly basic prepro-Urocortin 2. Insoluble SUMO-eXact-preproUCN2 was purified in milligram quantities by denaturing IMAC and solubilized in native phosphate buffer by on-column refolding or step-wise dialysis. Only a small fraction of this solubilized protein was able to bind onto the eXact™ affinity column and cleaved by NaF treatment. To test whether binding and cleavage failure was due to improperly refolded SUMO-eXact-preproUCN2 or to the presence of N- and C-terminal sequences flanking the eXact moiety, we created a SUMO-eXact-thioredoxin construct which was overexpressed mainly in the soluble form. This protein bound to and was cleaved efficiently on the eXact™ column to yield native thioredoxin. Solubilized SUMO-eXact-preproUCN2 was used successfully to generate two high affinity mouse monoclonal antibodies (KD~10⁻¹⁰ and 10⁻¹¹ M) specific to the pro-region of Urocortin 2.
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- 2013
16. The Comparative Effectiveness of Diabetes Prevention Strategies to Reduce Postpartum Weight Retention in Women With Gestational Diabetes Mellitus: The Gestational Diabetes’ Effects on Moms (GEM) Cluster Randomized Controlled Trial
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Ferrara, Assiamira, primary, Hedderson, Monique M., additional, Brown, Susan D., additional, Albright, Cheryl L., additional, Ehrlich, Samantha F., additional, Tsai, Ai-Lin, additional, Caan, Bette J., additional, Sternfeld, Barbara, additional, Gordon, Nancy P., additional, Schmittdiel, Julie A., additional, Gunderson, Erica P., additional, Mevi, Ashley A., additional, Herman, William H., additional, Ching, Jenny, additional, Crites, Yvonne, additional, and Quesenberry, Charles P., additional
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- 2015
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17. Optical Spectroscopic Approach for Non-Invasive Monitoring of Plant Water and Nutrient Stress
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Pek Ching Jenny Chong, Anand Asundi, Oi Wah Liew, and Bingqing Li
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Drought stress ,Nutrient ,Chemistry ,Optical detector ,fungi ,Non invasive ,Nutrient stress ,Biophysics ,food and beverages ,Reflectivity ,Remote sensing ,Early onset ,Indicator plant - Abstract
Early non-destructive monitoring of plant responses to water and nutrient stresses was achieved via optical spectroscopy. Transformed reflectance spectra provided cues to distinguish between iron and calcium deficiencies at their early onset. Irreversible plant damage could be prevented using a dual component system comprising an optical detector and novel transgenic indicator plants that emit green fluorescence signals at early onset of drought stress.
- Published
- 2007
18. An SRLLR motif downstream of the scissile bond enhances enterokinase cleavage efficiency
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Timothy G. Yandle, Yong Chen Amy Lau, Oi Wah Liew, Stephen O. Brennan, Yok Zuan Lim, Pek Ching Jenny Chong, and Cui Xia Ang
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Enteropeptidase ,Spectrometry, Mass, Electrospray Ionization ,Recombinant Fusion Proteins ,Amino Acid Motifs ,Molecular Sequence Data ,Peptide ,Cleavage (embryo) ,Biochemistry ,Serine ,Scissile bond ,Mice ,Thioredoxins ,Animals ,Humans ,Cloning, Molecular ,Chromatography, High Pressure Liquid ,chemistry.chemical_classification ,Sequence Homology, Amino Acid ,Natriuretic Peptide, C-Type ,General Medicine ,Fusion protein ,Amino acid ,chemistry ,Electrophoresis, Polyacrylamide Gel ,Thioredoxin - Abstract
In a previous paper, we reported more efficient enterokinase cleavage at a C-terminal non-target LKGDR(201) site compared with an internally sited canonical recognition site, DDDDK(156). When this non-target site was placed internally to replace DDDDK(156) between the thioredoxin moiety and mouse NT-proCNP(1-50), this site was poorly processed leading us to conclude that efficient processing at LKGDR(201) in the first instance was due to its accessibility at the C-terminus of the fusion protein. Subsequently, we reasoned that treatment of thioredoxin-fused NT-proCNP(1-81) would allow us to retrieve full-length NT-proCNP(1-81) without undue processing at the LKGDR(201) site since this non-target site would now be located internally about 36 residues away from the C-terminus and hence not be hydrolyzed efficiently. Surprisingly, ESI-MS data showed that the LKGDR site in thioredoxin-fused human NT-proCNP(1-81) was still very efficiently cleaved and revealed a new but slow hydrolysis site with the sequence RVDTK/SRAAW to yield a peptide consistent with NT-proCNP(58-81). The evidence obtained from these experiments led us to postulate that efficient cleavage at the non-target LKGDR(201) site was not merely influenced by steric constraints but also by the sequence context downstream of the scissile bond. Hence, we constructed variants of thioredoxin-mouse NT-proCNP(1-50) where SRLLR residues (i.e. those immediately downstream from the LKGDR(201) site in NT-proCNP(1-50)) were systematically added one at a time downstream of the internal DDDDK(156) site. To evaluate the relative effects of site accessibility and downstream sequence context on the efficiency of enterokinase cleavage, we have also replaced the native LKGDR(201) sequence with DDDDK(201). Our results showed that incremental addition of SRLLR residues led to a steady increase in the rate of hydrolysis at DDDDK(156). Further variants comprising DDDDK(156)SS, DDDDK(156)SD and DDDDK(156)RR showed that the minimal critical determinants for enhanced enterokinase cleavage are serine in the P1' position followed by a serine or a basic residue, lysine or arginine, in the P2' position. Our data provided conclusive evidence that the influence of downstream sequences on recombinant light chain enterokinase activity was greater than accessibility of the target site at the terminus region of the protein. We further showed that the catalytic efficiency of the native holoenzyme was influenced primarily by residues on the N-terminal side of the scissile bond while being neutral to residues on the C-terminal side. Finally, we found that cleavage of all nine fusion proteins reflects accurate hydrolysis at the DDDDK(156) and DDDDK(201) sites when recombinant light chain enterokinase was used while non-specific processing at secondary sites were observed when these fusion proteins were treated with the native holoenzyme.
- Published
- 2006
19. A His6-SUMO-eXact tag for producing human prepro-Urocortin 2 in Escherichia coli for raising monoclonal antibodies
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Liew, Oi Wah, primary, Ang, Cui Xia, additional, Peh, Yu Pei, additional, Chong, Pek Ching Jenny, additional, Ng, Yan Xia, additional, Hwang, Le-Ann, additional, Koh, Xin Yu, additional, Yip, Yin Mun, additional, Liu, Wei, additional, and Richards, A. Mark, additional
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- 2014
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20. Referral to Telephonic Nurse Management Improves Outcomes in Women With Gestational Diabetes
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Ferrara, Assiamira, primary, Hedderson, Monique M., additional, Ching, Jenny, additional, Kim, Catherine, additional, Peng, Tiffany, additional, and Crites, Yvonne M., additional
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- 2012
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21. Mechanism of NS2B-Mediated Activation of NS3pro in Dengue Virus: Molecular Dynamics Simulations and Bioassays
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Zuo, Zhili, primary, Liew, Oi Wah, additional, Chen, Gang, additional, Chong, Pek Ching Jenny, additional, Lee, Siew Hui, additional, Chen, Kaixian, additional, Jiang, Hualiang, additional, Puah, Chum Mok, additional, and Zhu, Weiliang, additional
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- 2009
- Full Text
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22. Optical Spectroscopic Approach for Non-Invasive Monitoring of Plant Water and Nutrient Stress
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Liew, Oi Wah, primary, Chong, Pek Ching Jenny, additional, Li, Bingqing, additional, and Asundi, Anand K., additional
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- 2007
- Full Text
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23. Erratum to 'An SRLLR motif downstream of the scissile bond enhances enterokinase cleavage efficiency' [Biochimie 89 (2007) 21–29]
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Pek Ching Jenny Chong, Stephen O. Brennan, Timothy G. Yandle, Oi Wah Liew, Yok Zuan Lim, Cui Xia Ang, and Yong Chen Amy Lau
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Enteropeptidase ,Scissile bond ,Biochemistry ,Stereochemistry ,Chemistry ,General Medicine ,Cleavage (embryo) - Published
- 2007
24. Comparison of glyburide and insulin for the management of gestational diabetes in a large managed care organization
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Ramos, Gladys A., primary, Jacobson, Gavin F., additional, Ching, Jenny Y., additional, Kirby, Russell S., additional, Ferrara, Assiamira, additional, and Field, D. Robin, additional
- Published
- 2004
- Full Text
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25. Seasonal variations in the chemical composition of selected Hong Kong seaweeds.
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Chan, Ching Ching Jenny., Chinese University of Hong Kong Graduate School. Graduate Board on Food & Nutritional Sciences., Chan, Ching Ching Jenny., and Chinese University of Hong Kong Graduate School. Graduate Board on Food & Nutritional Sciences.
- Abstract
by Chan Ching Ching Jenny., Thesis (M.Phil.)--Chinese University of Hong Kong, 1997., Includes bibliographical references (leaves 118-127)., Acknowledgments --- p.i, p.ii, List of figures --- p.iv, List of tables --- p.vii, List of abbreviations --- p.viii, Chapter Chapter 1. --- Introduction, Chapter 1.1 --- Consumption and classification of seaweeds --- p.1, Chapter 1.2 --- Present uses of seaweeds --- p.4, Chapter 1.2.1 --- The chemical composition of seaweeds --- p.4, Chapter 1.2.2 --- Industrial uses - phycocolloids, Chapter 1.2.2.1 --- Alginate --- p.7, Chapter 1.2.2.2 --- Carrageenan --- p.9, Chapter 1.2.2.3 --- Agar --- p.12, Chapter 1.3 --- Seasonal variations studies --- p.14, Chapter 1.4 --- Seaweeds in Hong Kong --- p.16, Chapter 1.5 --- Seaweeds selected for study, Chapter 1.5.1 --- Sargassum species, Chapter 1.5.1.1 --- Uses of Sargassum --- p.16, Chapter 1.5.1.2 --- Seasonal variations of Sargassum --- p.17, Chapter 1.5.2 --- Hypnea species --- p.19, Chapter 1.6 --- Drying methods used in seaweed studies and industrial processing --- p.20, Chapter 1.7 --- Significance of the present study --- p.22, Chapter Chapter 2. --- Materials and methods, Chapter 2.1 --- "Location, seaweed collection, and environmental parameters" --- p.24, Chapter 2.2 --- Sample preparation --- p.24, Chapter 2.3 --- Chemical composition analysis, Chapter 2.3.1 --- Protein --- p.26, Chapter 2.3.2 --- Amino acids --- p.28, Chapter 2.3.3 --- Dietary fiber --- p.29, Chapter 2.3.4 --- Sugar --- p.30, Chapter 2.3.5 --- Ash --- p.31, Chapter 2.3.6 --- Mineral elements --- p.32, Chapter 2.3.7 --- Vitamin C --- p.32, Chapter 2.3.8 --- Moisture --- p.33, Chapter 2.4 --- Characterization of alginate from brown seaweed Sargassum hemiphyllum, Chapter 2.4.1 --- Alginate extraction --- p.33, Chapter 2.4.2 --- Uronic acid block composition determination --- p.34, Chapter 2.4.2.1 --- M/G ratio determination --- p.35, Chapter 2.4.2.2 --- Phenol-sulfuric acid method for determination of sugar --- p.35, Chapter 2.5 --- Characterization of carrageenan from red seaweed Hypnea charoides, Chapter 2.5.1 --- Carrageenan extraction --- p.35, Chapter 2.5.2 --- Chemical analysis of carrageenan - sulfate content --- p.36, Chapter 2.5.3 --- Physical analysis of carrageenan, Chapter 2.5.3.1 --- Gelling temperature --- p.37, Chapter 2.5.3.2 --- Gelling concentration --- p.37, Chapter 2.6 --- Data Analysis --- p.38, Chapter Chapter 3. --- "Comparative studies on the effect of sun-drying, oven-drying, and freeze- drying methods on the chemical composition of brown seaweed Sargassum hemiphyllum", Chapter 3.1 --- Results and discussion, Chapter 3.1.1 --- Color and appearance --- p.39, Chapter 3.1.2 --- Chemical composition, Chapter 3.1.2.1 --- "Protein, dietary fiber, ash, and moisture" --- p.39, Chapter 3.1.2.2 --- Amino acids --- p.42, Chapter 3.1.2.3 --- Mineral elements --- p.44, Chapter 3.1.2.4 --- Vitamin C --- p.46, Chapter 3.1.3 --- Characterization of alginate, Chapter 3.1.3.1 --- Extraction of alginate --- p.46, Chapter 3.1.3.2 --- Uronic acid block composition and M/G ratio --- p.48, Chapter 3.2 --- Summary --- p.50, Chapter Chapter 4. --- Seasonal variations in the chemical composition of brown seaweed Sargassum hemiphyllum, Chapter 4.1 --- Results and discussion, Chapter 4.1.1 --- Environmental parameters --- p.53, Chapter 4.1.2 --- Morphology --- p.58, Chapter 4.1.3 --- Chemical composition, Chapter 4.1.3.1 --- Protein and amino acids --- p.60, Chapter 4.1.3.2 --- Dietary fiber and polysaccharide sugars --- p.64, Chapter 4.1.3.3 --- Ash and mineral elements --- p.69, Chapter 4.1.3.4 --- Vitamin C --- p.76, Chapter 4.1.3.5 --- Water and moisture --- p.78, Chapter 4.1.4 --- Characterization of phycocolloid - alginate, Chapter 4.1.4.1 --- Alginate extraction --- p.78, Chapter 4.1.4.2 --- Uronic acid block composition and M/G ratio --- p.79, Chapter Chapter 5. --- Seasonal variations in the chemical composition of red seaweed Hypnea charoides, Chapter 5.1 --- Results and discussion, Chapter 5.1.1 --- Environmental parameters --- p.82, Chapter 5.1.2 --- Color and appearance --- p.86, Chapter 5.1.3 --- Chemical composition, Chapter 5.1.3.1 --- Protein and amino acids --- p.88, Chapter 5.1.3.2 --- Dietary fiber and polysaccharide sugars --- p.93, Chapter 5.1.3.3 --- Ash and mineral elements --- p.97, Chapter 5.1.3.4 --- Vitamin C --- p.104, Chapter 5.1.3.5 --- Water and moisture --- p.104, Chapter 5.1.4 --- Characterization of phycocolloid - carrageenan, Chapter 5.1.4.1 --- Carrageenan extraction --- p.106, Chapter 5.1.4.2 --- Chemical characteristic of carrageenan - sulfate content --- p.109, Chapter 5.1.4.3 --- Physical characteristics of carrageenan, Chapter 5.1.4.3.1 --- Gelling temperature --- p.110, Chapter 5.1.4.3.2 --- Gelling concentration --- p.110, Chapter Chapter 6. --- Conclusion --- p.113, Chapter 6.1 --- Development perspectives of seaweeds --- p.116, Chapter Chapter 7. --- References --- p.118, Chapter Chapter 8. --- Appendixes --- p.128, http://library.cuhk.edu.hk/record=b5889202, Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/)
- Published
- 1997
26. Comparison of glyburide and insulin for the management of gestational diabetics with greatly elevated oral glucose challenge test and fasting hyperglycemia
- Author
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Ramos (F), Gladys, Jacobson, Gavin, Kirby, Russell, Ching, Jenny Y., and Field, Robin
- Published
- 2005
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27. A His6-SUMO-eXact tag for producing human prepro-Urocortin 2 in Escherichia coli for raising monoclonal antibodies.
- Author
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Liew, Oi Wah, Ang, Cui Xia, Peh, Yu Pei, Chong, Pek Ching Jenny, Ng, Yan Xia, Hwang, Le-Ann, Koh, Xin Yu, Yip, Yin Mun, Liu, Wei, and Richards, A. Mark
- Subjects
- *
SMALL ubiquitin-related modifier proteins , *UROCORTIN , *ESCHERICHIA coli , *MONOCLONAL antibodies , *GENE expression , *THIOREDOXIN - Abstract
Abstract: This is a first report of recombinant production of human prepro-Urocortin 2 in Escherichia coli by N-terminal fusion with a triple His6-SUMO-eXact tag and its subsequent use as an antigen for the production and screening of very high affinity monoclonal antibodies. The rationale for this combinatorial construct is that the His tag allows first step protein purification of insoluble and soluble proteins, the SUMO tag enhances protein expression level and solubility, while the eXact tag facilitates anion-triggered on-column cleavage of the triple tag to recover pure native proteins in a simple two-step protein purification procedure. Compared with an eXact fusion alone, the presence of the SUMO moiety enhanced overall expression levels by 4 to 10 fold but not the solubility of the highly basic prepro-Urocortin 2. Insoluble SUMO-eXact-preproUCN2 was purified in milligram quantities by denaturing IMAC and solubilized in native phosphate buffer by on-column refolding or step-wise dialysis. Only a small fraction of this solubilized protein was able to bind onto the eXact™ affinity column and cleaved by NaF treatment. To test whether binding and cleavage failure was due to improperly refolded SUMO-eXact-preproUCN2 or to the presence of N- and C-terminal sequences flanking the eXact moiety, we created a SUMO-eXact-thioredoxin construct which was overexpressed mainly in the soluble form. This protein bound to and was cleaved efficiently on the eXact™ column to yield native thioredoxin. Solubilized SUMO-eXact-preproUCN2 was used successfully to generate two high affinity mouse monoclonal antibodies (KD~10−10 and 10−11 M) specific to the pro-region of Urocortin 2. [Copyright &y& Elsevier]
- Published
- 2014
- Full Text
- View/download PDF
28. Signature Optical Cues: Emerging Technologies for Monitoring Plant Health.
- Author
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Liew OW, Chong PC, Li B, and Asundi AK
- Abstract
Optical technologies can be developed as practical tools for monitoring plant health by providing unique spectral signatures that can be related to specific plant stresses. Signatures from thermal and fluorescence imaging have been used successfully to track pathogen invasion before visual symptoms are observed. Another approach for noninvasive plant health monitoring involves elucidating the manner with which light interacts with the plant leaf and being able to identify changes in spectral characteristics in response to specific stresses. To achieve this, an important step is to understand the biochemical and anatomical features governing leaf reflectance, transmission and absorption. Many studies have opened up possibilities that subtle changes in leaf reflectance spectra can be analyzed in a plethora of ways for discriminating nutrient and water stress, but with limited success. There has also been interest in developing transgenic phytosensors to elucidate plant status in relation to environmental conditions. This approach involves unambiguous signal creation whereby genetic modification to generate reporter plants has resulted in distinct optical signals emitted in response to specific stressors. Most of these studies are limited to laboratory or controlled greenhouse environments at leaf level. The practical translation of spectral cues for application under field conditions at canopy and regional levels by remote aerial sensing remains a challenge. The movement towards technology development is well exemplified by the Controlled Ecological Life Support System under development by NASA which brings together technologies for monitoring plant status concomitantly with instrumentation for environmental monitoring and feedback control.
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- 2008
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29. Managing High-Risk Obstetric Cases and Analyzing Neonatal Outcome: The KP Northern California Regional Perinatal Service Center.
- Author
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Crites Y, Ching J, Lessner C, and Ray D
- Published
- 2005
- Full Text
- View/download PDF
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