11 results on '"A J Kalan"'
Search Results
2. Micromechanical based constitutive relations for modeling the bulk growth of single crystal InP
- Author
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Robert J. Kalan and Antoinette M. Maniatty
- Subjects
Materials science ,Constitutive equation ,Mineralogy ,Crystal growth ,Slip (materials science) ,Mechanics ,Physics::Classical Physics ,Condensed Matter Physics ,Crystallographic defect ,Inorganic Chemistry ,Materials Chemistry ,Hardening (metallurgy) ,Dislocation ,Single crystal ,Single slip - Abstract
A micromechanical based constitutive model is developed for InP, which takes into account the movement and multiplication of dislocations. The model is based on the single slip model of Alexander and Haasen, and is expanded to include multiple slip and latent hardening. The model is incorporated into a finite element code and the results are compared to experimental data for compression tests in a single slip orientation.
- Published
- 2001
- Full Text
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3. Septate uterus with left fallopian tube hypoplasia and ipsilateral ovarian agenesis
- Author
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Bo Y. Suh and Marc J. Kalan
- Subjects
endocrine system ,animal structures ,endocrine system diseases ,Physiology ,medicine.medical_treatment ,Uterus ,Ovarian agenesis ,Ovary ,Young Adult ,Laparotomy ,Genetics ,medicine ,Humans ,Fallopian Tubes ,Genetics (clinical) ,urogenital system ,business.industry ,Female infertility ,Obstetrics and Gynecology ,Genitalia, Female ,General Medicine ,Anatomy ,medicine.disease ,female genital diseases and pregnancy complications ,Hypoplasia ,medicine.anatomical_structure ,Reproductive Medicine ,Female ,business ,Infertility, Female ,Septate uterus ,Developmental Biology ,Fallopian tube - Abstract
To report a combined genital tract anomaly of septate uterus, unilateral fallopian tube hypoplasia, and ipsilateral ovarian agenesis.Case report.Academic tertiary care center.A 24-year-old female.History and physical, pelvic sonogram, hysterosalpingogram, intravenous pyelogram, abdominal and pelvic magnetic resonance imaging, diagnostic laparoscopy, exploratory laparotomy, cuff neosalpingostomy, and uterine septum resection.Recognition of three independent and rare reproductive tract anomalies in the same patient.Restoration of anatomy and subsequent fertility.A careful clinical evaluation with consideration of embryologic origin is essential to the identification and treatment of rare reproductive tract malformations.
- Published
- 2008
- Full Text
- View/download PDF
4. Objective habitual physical activity and estradiol levels in obese Latina adolescents
- Author
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Amanda K. Vanni, Marc J. Kalan, Lauren E. Gyllenhammer, Leslie Bernstein, Jaimie N. Davis, and Courtney E. Byrd-Williams
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Blood Glucose ,Risk ,medicine.medical_specialty ,Adolescent ,Breast Neoplasms ,Overweight ,Article ,Body Mass Index ,Sex hormone-binding globulin ,Insulin resistance ,Internal medicine ,Sex Hormone-Binding Globulin ,Follicular phase ,Accelerometry ,medicine ,Humans ,Orthopedics and Sports Medicine ,Body Weights and Measures ,Testosterone ,Obesity ,Exercise ,biology ,Estradiol ,business.industry ,Dehydroepiandrosterone Sulfate ,Hispanic or Latino ,medicine.disease ,Endocrinology ,Cross-Sectional Studies ,biology.protein ,Female ,medicine.symptom ,Insulin Resistance ,business ,Body mass index ,Hormone - Abstract
Background:Lifetime physical activity (PA) is associated with decreased breast cancer (BC) risk; reports suggest that PA during adolescence contributes strongly to this relationship. PA lowers production of sex hormones, specifically estradiol, or decreases insulin resistance (IR), thereby lowering risk. Overweight Latina adolescents are insulin resistant and exhibit low levels of PA, potentially increasing their future BC risk.Methods:37 obese Latina adolescents (15.7 ± 1.1 yrs) provided measures of PA using accelerometry; plasma follicular phase estradiol, sex-hormone binding globulin, total and free testosterone, dehydroepiandrosterone-sulfate (DHEAS); IR using HOMA-IR; and body composition via DEXA. Partial correlations and stepwise linear regressions assessed cross-sectional relationships between sex hormones, IR and PA. Body composition, and age were included a priori as covariates.Results:Estradiol was negatively associated with accelerometer counts per minute (CPM; r = −0.4; P = .02), percent time spent in moderate PA (%MPA; r = −0.5; P = .006), and percent time in moderate or vigorous PA (%MVPA; r = −0.5; P = .007). DHEAS was positively associated with CPM (r = .4, P = .009), %MPA (r = .3, P = .04), and %MVPA (r = .3, P = .04). Other sex hormones and IR were not associated with PA measures.Conclusion:This study is the first to show that higher habitual PA was inversely associated with estradiol in obese adolescents.
- Published
- 2012
5. LNG cascading damage study. Volume I, fracture testing report
- Author
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Jason P. Petti and Robert J. Kalan
- Subjects
Materials science ,business.industry ,Cryogenics ,Structural engineering ,engineering.material ,A36 steel ,Fracture toughness ,Phase (matter) ,engineering ,Fracture (geology) ,LNG spill ,Composite material ,business ,Stress concentration ,Liquefied natural gas - Abstract
As part of the liquefied natural gas (LNG) Cascading Damage Study, a series of structural tests were conducted to investigate the thermal induced fracture of steel plate structures. The thermal stresses were achieved by applying liquid nitrogen (LN{sub 2}) onto sections of each steel plate. In addition to inducing large thermal stresses, the lowering of the steel temperature simultaneously reduced the fracture toughness. Liquid nitrogen was used as a surrogate for LNG due to safety concerns and since the temperature of LN{sub 2} is similar (-190 C) to LNG (-161 C). The use of LN{sub 2} ensured that the tests could achieve cryogenic temperatures in the range an actual vessel would encounter during a LNG spill. There were four phases to this test series. Phase I was the initial exploratory stage, which was used to develop the testing process. In the Phase II series of tests, larger plates were used and tested until fracture. The plate sizes ranged from 4 ft square pieces to 6 ft square sections with thicknesses from 1/4 inches to 3/4 inches. This phase investigated the cooling rates on larger plates and the effect of different notch geometries (stress concentrations used to initiate brittle fracture). Phase II was divided into two sections, Phase II-A and Phase II-B. Phase II-A used standard A36 steel, while Phase II-B used marine grade steels. In Phase III, the test structures were significantly larger, in the range of 12 ft by 12 ft by 3 ft high. These structures were designed with more complex geometries to include features similar to those on LNG vessels. The final test phase, Phase IV, investigated differences in the heat transfer (cooling rates) between LNG and LN{sub 2}. All of the tests conducted in this study are used in subsequent parts of the LNG Cascading Damage Study, specifically the computational analyses.
- Published
- 2011
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6. PAT-1 safety analysis report addendum author responses to request for additional information
- Author
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David T. Schmale, Charles W. Morrow, David Russell Miller, Richard Hiroyuki Yoshimura, Gerald Albert Knorovsky, Perry L. Jones, Robert J. Kalan, Ruth F. Weiner, David Cameron Harding, Lili A. Akin, and Carlos Lopez
- Subjects
Engineering ,business.industry ,chemistry.chemical_element ,Addendum ,Certification ,Computer security ,computer.software_genre ,Certificate ,Plutonium ,chemistry ,Aeronautics ,Code of Federal Regulations ,Nuclear safeguards ,business ,computer - Abstract
The Plutonium Air Transportable Package, Model PAT-1, is certified under Title 10, Code of Federal Regulations Part 71 by the U.S. Nuclear Regulatory Commission (NRC) per Certificate of Compliance (CoC) USA/0361B(U)F-96 (currently Revision 9). The National Nuclear Security Administration (NNSA) submitted SAND Report SAND2009-5822 to NRC that documented the incorporation of plutonium (Pu) metal as a new payload for the PAT-1 package. NRC responded with a Request for Additional Information (RAI), identifying information needed in connection with its review of the application. The purpose of this SAND report is to provide the authors responses to each RAI. SAND Report SAND2010-6106 containing the proposed changes to the Addendum is provided separately.
- Published
- 2010
- Full Text
- View/download PDF
7. PAT-1 safety analysis report addendum
- Author
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Perry L. Jones, Gerald Albert Knorovsky, David Cameron Harding, Richard Hiroyuki Yoshimura, Charles W. Morrow, David Russell Miller, David T. Schmale, Robert J. Kalan, Ruth F. Weiner, Lili A. Akin, and Carlos Lopez
- Subjects
Engineering ,Air transport ,Waste management ,Payload ,business.industry ,Addendum ,chemistry.chemical_element ,Plutonium ,Containment ,Criticality ,chemistry ,Code of Federal Regulations ,Forensic engineering ,business ,Transuranium element - Abstract
The Plutonium Air Transportable Package, Model PAT-1, is certified under Title 10, Code of Federal Regulations Part 71 by the U.S. Nuclear Regulatory Commission (NRC) per Certificate of Compliance (CoC) USA/0361B(U)F-96 (currently Revision 9). The purpose of this SAR Addendum is to incorporate plutonium (Pu) metal as a new payload for the PAT-1 package. The Pu metal is packed in an inner container (designated the T-Ampoule) that replaces the PC-1 inner container. The documentation and results from analysis contained in this addendum demonstrate that the replacement of the PC-1 and associated packaging material with the T-Ampoule and associated packaging with the addition of the plutonium metal content are not significant with respect to the design, operating characteristics, or safe performance of the containment system and prevention of criticality when the package is subjected to the tests specified in 10 CFR 71.71, 71.73 and 71.74.
- Published
- 2010
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8. Abnormal and Dysfunctional Bleeding
- Author
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Marc J. Kalan
- Subjects
Gynecology ,medicine.medical_specialty ,Obstetrics ,business.industry ,medicine ,Dysfunctional family ,business - Published
- 2010
- Full Text
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9. Endangerment of Forest Ecosystems in Slovenia on the Basis of Forest Dieback Inventories and Research
- Author
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J. Kalan, F. Batič, D. Jurc, M. šolar, M. Lešnjak, T. Mekinda, and T. Kralj
- Subjects
Abiotic component ,geography ,Forest dieback ,geography.geographical_feature_category ,Forest ecology ,Grazing ,Wildlife ,Secondary forest ,Forestry ,Old-growth forest ,Forest restoration - Abstract
The condition of Slovenian forests has been investigated by forest decline inventories performed in the years 1987, 1989 and 1990 using from the ECE prescribed methodology. 35% of all forests (68.5% of conifers, 8.1% of broadleaves) were found to show signs of damage, although the trend of damage extend and degree has been decreasing since the first forest die-back inventory. The causes for the decline are indentified as harmful abiotic (storms, fire, etc.) and biotic agents (pests and deseases, wildlife grazing), climatic changes, forest menagement and in the influence of air pollution (air pollution monitoring, lichen mapping and analyisis of sulphur content in Norway spruce needles). Forest decline or damage has been found to be the consequence of multiple stress, where all above cited parameters are involved, differing in time, intensity and locality.
- Published
- 1992
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10. Treponema pallidum within cells of a primary chancre from a human female
- Author
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J N Miller, J A Sykes, and A J Kalan
- Subjects
Adult ,Cytoplasm ,Pathology ,medicine.medical_specialty ,Dermatology ,Microbiology ,Methods ,medicine ,Humans ,Syphilis ,Treponema pallidum ,Treponema ,biology ,Epithelial Cells ,Desmosomes ,Fibroblasts ,medicine.disease ,biology.organism_classification ,Microscopy, Electron ,Infectious Diseases ,Lead ,Uranium ,Female ,medicine.symptom ,Research Article ,Chancre - Published
- 1974
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11. Intracellular Treponema pallidum in cells of a syphilitic lesion of the uterine cervix
- Author
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J.A. Sykes and J. Kalan
- Subjects
Adult ,Pathology ,medicine.medical_specialty ,Vacuole ,Biology ,Epithelium ,Lesion ,Uterine Cervical Diseases ,Biopsy ,medicine ,Humans ,Syphilis ,Treponema pallidum ,Cervix ,Cell Nucleus ,Inclusion Bodies ,Nucleoplasm ,Treponema ,medicine.diagnostic_test ,Biopsy, Needle ,Obstetrics and Gynecology ,Epithelial Cells ,Fibroblasts ,biology.organism_classification ,Microscopy, Electron ,medicine.anatomical_structure ,Uterine cervix ,Female ,Collagen ,medicine.symptom ,Intracellular - Abstract
In an electron microscopic study of biopsy tissue from an ulcer of the human cervix uteri, organisms morphologically identical to T. pallidum were observed. Large numbers of the organisms were seen lying among collagen fibrils and between cells. T. pallidum was seen within vacuoles of some fibroblasts and epithelial cells. Within the nucleoplasm of several cells, treponemes were observed, surrounded by a clear zone which might represent a mucopolysaccharide outer layer. The diameter of the organisms was 171 nm., and the diameter of the external axial filaments was 25 nm., dimensions similar to those reported by others for T. pallidum .
- Published
- 1975
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