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This study was conducted at Oklahoma State University, Stillwater, OK, to evaluate the response to deltamethrin concentrations for adults of three stored-product insects, Tribolium castaneum (Herbst), Sitophilus oryzae (L.), and Rhyzopertha dominica (F.). In insect toxicological studies, knockdown is the state of intoxication and partial paralysis as a result of exposure to an insecticide. Deltamethrin concentrations ranging from 0.48 to 140mg/m² (1 to 3,000 ppm) were sprayed on glass Petri dishes. After the dishes dried, 20 adult insects of each species were placed on the treated dishes to determine the contact toxicity of deltamethrin. Assessments for knockdown were made at 15-min intervals for up to 8 h after initial exposure and then again after 24 or 48 h. Insects were then transferred to clean untreated Petri dishes with diet and observed from 0.5 to 72 h. Mortality was assessed 72 h after transfer to untreated dishes with food material. Deltamethrin was highly effective against all three species tested and achieved 99% knockdown of insects of all species within 4 h after exposure at concentrations ≥1.2mg/m². Although some insects recovered from initial knockdown at concentrations ≤48mg/m², nearly all the insects were killed at 140mg/m² when exposed for 48 h. LC95 values for all species tested, for the 48-h exposure period, were <140mg/m², the concentration of deltamethrin that could potentially be present in new ZeroFly Storage Bag fabric. ZeroFly bags are used for stored-product insect pest control. [ABSTRACT FROM AUTHOR]

Dairy cattle lameness represents one of the common concerns in intensive and commercial dairy farms. Lameness is characterized by gait-related behavioral changes in cows and multiple approaches are being utilized to associate these changes with lameness conditions including data from accelerometers, and other precision technologies. The objective was to evaluate the use of machine learning algorithms for the identification of lameness conditions in dairy cattle. In this study, 310 multiparous Holstein dairy cows from a herd in Northern Colorado were affixed with a leg-based accelerometer (Icerobotics® Inc, Edinburg, Scotland) to obtain the lying time (min/d), daily steps count (n/d), and daily change (n/d). Subsequently, study cows were monitored for 4 months and cows submitted for claw trimming (CT) were differentiated as receiving corrective claw trimming (CCT) or as being diagnosed with a lameness disorder and consequent therapeutic claw trimming (TCT) by a certified hoof trimmer. Cows not submitted to CT were considered healthy controls. A median filter was applied to smoothen the data by reducing inherent variability. Three different machine learning (ML) models were defined to fit each algorithm which included the conventional features (containing daily lying, daily steps, and daily change derived from the accelerometer), slope features (containing features extracted from each variable in Conventional feature), or all features (3 simple features and 3 slope features). Random forest (RF), Naive Bayes (NB), Logistic Regression (LR), and Time series (ROCKET) were used as ML predictive approaches. For the classification of cows requiring CCT and TCT, ROCKET classifier performed better with accuracy (> 90%), ROC-AUC (> 74%), and F1 score (> 0.61) as compared to other algorithms. Slope features derived in this study increased the efficiency of algorithms as the better-performing models included All features explored. However, further classification of diseases into infectious and non-infectious events was not effective because none of the algorithms presented satisfactory model accuracy parameters. For the classification of observed cow locomotion scores into severely lame and moderately lame conditions, the ROCKET classifier demonstrated satisfactory accuracy (> 0.85), ROC-AUC (> 0.68), and F1 scores (> 0.44). We conclude that ML models using accelerometer data are helpful in the identification of lameness in cows but need further research to increase the granularity and accuracy of classification., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Neupane et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Disease manifestations of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), a small vessel vasculitis with multisystemic effects, include respiratory, renal, nervous, gastrointestinal, and skin implications. Muscle weakness and inflammatory myopathy are rare manifestations of AAV. We report the case of a 77-year-old female with a medical history of hypothyroidism and osteoarthritis who presented with a two-month history of worsening muscle weakness (mainly proximal). She endorsed dysphagia, a 40-lb unintentional weight loss, and persistent sinusitis with middle ear effusions, requiring bilateral tympanostomy. The physical examination was notable for 2/5 muscle strength in her hip flexors and extensors, with 4/5 strength in other extremities. Lower extremity MRI showed diffuse intramuscular edema between fat planes and intramuscular septal regions. Erythrocyte sedimentation rate (70 mm/hr), C-reactive protein (141 mg/L), creatine kinase (690 U/L), and anti-myeloperoxidase (MPO) antibodies (>999 AU/mL) were elevated. A thigh biopsy revealed fibrinoid necrosis of small intramuscular arteries, confluent circumferential granulomatous vessel wall inflammation, and associated mild chronic inflammation, including occasional eosinophils and a few plasma cells. She was diagnosed with MPO-positive AAV. The patient was started on high-dose steroids (prednisone), with a taper on a disease-modifying agent, azathioprine, with significant improvement in symptoms over the next four months and complete resolution at 16-month follow-up. This patient's clinical presentation of predominant lower extremity weakness due to inflammatory myositis is an unusual manifestation of AAV. Clinicians should keep a broad differential diagnosis and consider the possibility of AAV, especially in cases of muscle weakness presenting as inflammatory myositis, in the absence of other clinical manifestations of systemic vasculitis or specific myositis serologies., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Okoye et al.)

This study presents a design-based research approach involving five iterations (semester) of implementing design thinking for engaged learning (DTEL) in an animal science capstone course. DTEL scaffolds design thinking into 10 stages for collaborative project-based learning to foster skills like problem solving and teamwork. Across five semesters (spring 2021 to spring 2023), student reflections ( n  = 276) were analyzed to identify aspects that worked well or were challenging. Network analysis visualized relationships ( P  < 0.05; Q > 0.4) between codes representing strengths, struggles, and alignment with principles from learning theories. Utilizing the relationships between strengths and theory-based principles to address struggles, resulted in changes to the design of the capstone course each iteration (time that the course was taught). The complexity of maps increased over iterations. Initially, struggles were prominent but decreased as responsive design refinements were made. Alignment of student experiences with principles from learning theories grew substantially from the first iteration to the last (theory-related nodes representing 11.4% vs. 24.4% in each network map, respectively), with learning theories also occupying more central positions in the last map (iteration five) compared to earlier ones (iterations one through four). These changes suggest student experiences increasingly aligned with principles of cognitive constructivism, social constructivism, constructionism, situated learning, and transformative learning. Design principles derived from the five-iteration study include: (1) allocating most time to hands-on lab work vs. lecture, (2) designating a coordinator faculty, (3) scaffolding for instructors unfamiliar with DTEL, (4) emphasizing consistency in processes over grades, and (5) intentionally developing teamwork skills. The study demonstrates the value of design-based research for iteratively refining and studying learning experiences to foster critical skills for undergraduate students in animal science., Competing Interests: The authors Alice Poggi Brandão; Jeffrey Glennon Wiegert; Sushil Paudyal and Kathrin Anson Dunlap served as instructors for Animal Science Capstone (ANSC 498), during the data collection period. None of the authors have any potential conflict of interest to disclose., (© The Author(s) 2024. Published by Oxford University Press on behalf of the American Society of Animal Science.)

Introduction: Stress is the response of body to any change. The end stage of renal disease and the process of haemodialysis treatment are long-term stressors that alter patients' well-being and everyday lifestyle. The aim of this study was to find out the prevalence of moderate stress levels among patients undergoing hemodialysis in a tertiary care centre., Methods: A descriptive cross-sectional study was conducted among patients undergoing hemodialysis from 1 October 2021 to 30 September 2022. Ethical clearance from the Institutional Review Committee. Patients undergoing maintenance haemodialysis for at least 3 months were included in the study. Convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval., Results: Among 118 patients, 82 (69.49%) (61.18-77.80, 95% Confidence Interval) had moderate stress levels, out of which 51 (62.20%) were male and 31 (37.80%) were female., Conclusions: The prevalence of moderate stess level was found to be higher than other studies done in similar settings., Keywords: hemodialysis; prevalence; psychiatric disorders.

Background: Appendectomy is the most common emergency surgical procedure performed. Appendectomy is performed by either open or laparoscopic methods. However, there is lack of consensus regarding the most appropriate method. This study aimed to compare the outcomes of laparoscopic and open appendectomy in the treatment of acute appendicitis., Methods: Fifty-two patients undergoing appendectomy were analyzed in this prospective comparative study, with 26 patients each in laparoscopic and open group. The outcomes were measured in terms of operative time, postoperative pain at 4, 6 and 12 hours, length of hospital stay, postoperative complications according to modified Clavien Dindo classification and cost analysis., Results: Laparoscopic group had longer time after completion of surgery till exit from operation theatre (30 min in laparoscopic and 20 min in open, p<0.01) and significantly higher cost (Nrs. 26295 for laparoscopic and Nrs. 19575 for open, p<0.01) than open appendectomy. Operative time, time from entering operation theatre till being kept in operation table, time from being kept in operation table till initiation of anesthesia, postoperative pain at 4,6 and 12 hours and postoperative complications were insignificant in both groups., Conclusions: The results suggest that laparoscopic appendectomy group had longer recovery time after operation and was costlier than open appendectomy. Thus, the decision of the operative procedure can be based on the patient's preference.

Introduction: More than 700, 000 people die due to suicide every year. Suicide is the fourth leading cause of death among 15-29 year-olds. A total of 77% of global suicides occur in low- and middle-income countries. There is an increasing number of suicide all over the world. There is limited data regarding this issue. The available data are based on police reports or on specific populations. The aim of this study was to find out the prevalence of suicidal attempts among psychiatry patients presented to the Department of Emergency of a tertiary care centre., Methods: A Descriptive cross-sectional study was done in a tertiary care centre from January 2019 to July 2020 after taking Ethical approval from the same institute. Beck Suicide Intent Scale, MINI-7, IPDE and PLESS were used to assess suicidal intent, psychiatric comorbidities, personality disorder and life stress event scores respectively. Bronfenbrenner's Social Ecological Model was used to access various stressors. Point estimate and 95% Confidence Interval were calculated., Results: The Prevalence of suicidal attempts among psychiatry patients in the emergency department was 265 (24.50%), (21.66-26.74, 95% Confidence Interval). The majority were females 135 (51%). The majority attempted at home 238 (89.81%). Poisoning was the most common mode of attempting suicide., Conclusions: The Prevalence of suicidal attempts among psychiatry patients was higher than in the other studies done in similar settings., Keywords: comorbidity; cross-sectional studies; prevalence; psychosocial factors; suicide attempt.

Synchronous primary cancer of the gall bladder and distal common bile duct is rare. There are only few case reports and case series available of these synchronous cancers. Management of this tumor is individualized in these case reports and series based upon the presentation. We present a case of a patient who had multifocal adenocarcinoma involving distal common bile duct and gall bladder. Keywords: Distal common bile duct cancer; gall bladder cancer; synchronous primary.

Water desalination using membrane technology is one of the main technologies to resolve water pollution and scarcity issues. In the membrane treatment process, mineral scale deposition and fouling is a severe challenge that can lead to filtration efficiency decrease, permeate quality compromise, and even membrane damage. Multiple methods have been developed to resolve this problem, such as scale inhibitor addition, product recovery ratio adjustment, periodic membrane surface flushing. The performance of these methods largely depends on the ability to accurately predict the kinetics of mineral scale deposition and fouling with or without inhibitors. Gypsum is one of the most common and troublesome inorganic mineral scales in membrane systems, however, no mechanistic model is available to accurately predict the induction time of gypsum crystallization and inhibition. In this study, a new gypsum crystallization and inhibition model based on the classical nucleation theory and a Langmuir type adsorption isotherm has been developed. Through this model, it is believed that gypsum nucleation may gradually transit from homogeneous to heterogeneous nucleation when the gypsum saturation index (SI) decreases. Such transition is represented by a gradual decrease of surface tension at smaller SI values. This model assumes that the adsorption of inhibitors onto the gypsum nucleus can increase the nucleus superficial surface tension and prolong the induction time. Using the new model, this study accurately predicted the gypsum crystallization induction times with or without nine commonly used scale inhibitors over wide ranges of temperature (25-90 °C), SI (0.04-0.96), and background NaCl concentration (0-6 mol/L). The fitted affinity constants between scale inhibitors and gypsum show a good correlation with those between the same inhibitors and barite, indicating a similar inhibition mechanism via adsorption. Furthermore, by incorporating this model with the two-phase mineral deposition model our group developed previously, this study accurately predicts the gypsum deposition time on the membrane material surfaces reported in the literature. We believe that the model developed in this study can not only accurately predict the gypsum crystallization induction time with or without scale inhibitors, elucidate the gypsum crystallization and inhibition mechanisms, but also optimize the mineral scale control in the membrane filtration system., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)

Neuroblastoma (NB) is a pediatric malignancy affecting the peripheral nervous system. Despite recent advancements in treatment, many children affected with NB continue to submit to this illness, and new therapeutic strategies are desperately needed. In recent years, studies of carbon dots (CDs) as nanocarriers have mostly focused on the delivery of anticancer agents because of their biocompatibility, good aqueous dissolution, and photostability. Their fluorescence properties, surface functionalities, and surface charges differ on the basis of the type of precursors used and the synthetic approach implemented. At present, most CDs are used as nanocarriers by directly linking them either covalently or electrostatically to drug molecules. Though most modern CDs are synthesized from large carbon macromolecules and conjugated to anticancerous drugs, constructing CDs from the anticancerous drugs and precursors themselves to increase antitumoral activity requires further investigation. Herein, CDs were synthesized using difluoromethylornithine (DFMO), an irreversible ornithine decarboxylase inhibitor commonly used in high-risk neuroblastoma treatment regiments. In this study, NB cell lines, SMS-KCNR and SK-N-AS, were treated with DFMO, the newly synthesized DFMO CDs, and conventional DFMO conjugated to black carbon dots. Bioimaging was done to determine the cellular localization of a fluorescent drug over time. The mobility of DNA mixed with DFMO CDs was evaluated by gel electrophoresis. DFMO CDs were effectively synthesized from DFMO precursor and characterized using spectroscopic methods. The DFMO CDs effectively reduced cell viability with increasing dose. The effects were dramatic in the N-MYC-amplified line SMS-KCNR at 500 μM, which is comparable to high doses of conventional DFMO at a 60-fold lower concentration . In vitro bioimaging as well as DNA electrophoresis showed that synthesized DFMO CDs were able to enter the nucleus of neuroblastoma cells and neuronal cells and interact with DNA. Our new DFMO CDs exhibit a robust advantage over conventional DFMO because they induce comparable reductions in viability at a dramatically lower concentration.