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Assessment of the Quality of Frozen-Thawed Semen or Epididymal Sperm in Three Native Vietnamese Pig Breeds

Open Journal of Animal Sciences 2023年第3期13卷 283-297页

作者： Van Khanh Nguyen Huong Thu Thi Vu Huong le Thi Nguyen Huong Thi Nguyen Au Thi Hoang Dat Van le Nhung Tuyet Thi Nguyen Hieu Trung Phan Yen Kim Thi Pham Son Phan le quynh anh le quynh anh le Lan Doan Pham Minh Quang Luu Muoi Thi Nguyen Key Laboratory of Animal Cell Biotechnology National Institute of Animal Science Hanoi Vietnam National Institute of Animal Science Hanoi Vietnam Ministry of Science and Technology Hanoi Vietnam Animal Experiments and Domestic Animal Conservation Center National Institute of Animal Science Hanoi Vietnam

Our aim was to evaluate the quality of ejaculated and epididymal frozen-thawed pig sperm of endangered Vietnam native pig breeds. Ejaculated sperm was collected from live boars and epididymal sperm was collected from slaughtered boars of the MuongTe, Kieng Sat and Co BinhThuan breeds and frozen in 0.25 ml straws using a protocol established earlier for modern pig breeds. We evaluated the sperm quality after thawing in terms of motility and rates of viable and abnormal spermatozoa. Our results revealed that the sperm motility and rates of viable and abnormal frozen-thawed sperm were >30%, >44%, and leavage, blastocyst and hatching rates than did the epididymal sperm (60.11% vs 56.02%, 17.23% vs 14.31%, 3.78% vs 2.34%, respectively, P leavage rate, blastocyst formation rate and the average number of cells/blastocysts, the hatching blastocyst rate was different between the breeds (P > 0.05). In the Co BinhThuan breed, the rate of pregnancy of ejaculated groups was similar to that of the epididymal group. In conclusion, the ejaculated and epididymal sperm of native Vietnamese pigs were successfully frozen. We succeeded in creating embryos in vitro and pregnant pigs after artificial insemination from frozen-thawed semen in three native Vietnamese pig breeds for the first time. The use of the ejaculated sperm improved the production of native pig embryos in vitro efficiency.

关键词： Native Vietnamese Pig In Vitro Porcine Embryo Epididymal Ejaculate Artificial Insemination

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Generating highly active oxide-phosphide heterostructure through interfacial engineering to break the energy scaling relation toward urea-assisted natural seawater electrolysis

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Journal of Energy Chemistry 2024年第10期97卷 687-699,I0014页

作者： Ngoc Quang Tran Nam Hoang Vu Jianmin Yu Khanh Vy Pham Nguyen Thuy Tien Nguyen Tran Thuy-Kieu Truong Lishan Peng Thi anh le Yoshiyuki Kawazoe Center for Innovative Materials and Architectures Ho Chi Minh City 700000Vietnam Vietnam National University Ho Chi Minh City 700000Vietnam Faculty of Materials Science and Technology University of ScienceHo Chi Minh City 700000Vietnam Department of Mechanical Engineering Hanbat National University(HBNU)Daejeon 34158Republic of Korea Key Laboratory of Rare Earths Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou 341119JiangxiChina School of Chemical Engineering-Hanoi University of Science and Technology Hanoi 10000Vietnam New Industry Creation Hatchery Center Tohoku UniversitySendai 980-8579Japan

Urea-assisted natural seawater electrolysis is an emerging technology that is effective for grid-scale carbon-neutral hydrogen mass production yet *** scaling relations is an effective strategy to break through the bottleneck of natural seawater ***,by DFT calculation,we demonstrated that the interface boundaries between Ni_(2)P and MoO_(2) play an essential role in the selfrelaxation of the Ni-O interfacial bond,effectively modulating a coordination number of intermediates to control independently their adsorption-free energy,thus circumventing the adsorption-energy scaling *** this conceptual model,a well-defined 3D F-doped Ni_(2)P-MoO_(2) heterostructure microrod array was rationally designed via an interfacial engineering strategy toward urea-assisted natural seawater *** a result,the F-Ni_(2)P-MoO_(2) exhibits eminently active and durable bifunctional catalysts for both HER and OER in acid,alkaline,and alkaline sea water-based *** in-situ analysis,we found that a thin amorphous layer of NiOOH,which is evolved from the Ni_(2)P during anodic reaction,is real catalytic active sites for the OER and UOR ***,such electrode-assembled urea-assisted natural seawater electrolyzer requires low voltages of 1.29 and 1.75 V to drive 10 and600 mA cm^(-2)and demonstrates superior durability by operating continuously for 100 h at 100 mA cm^(-2),beyond commercial Pt/C||RuO_(2) and most previous reports.

关键词： Interfacial engineering Break scaling relationships Doping Natural seawater splitting Urea electrolysis

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TiO₂-PES Fibrous Composite Material for Ammonia Removal Using UV-A Photocatalyst

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Journal of Materials Science and Chemical Engineering 2024年第1期12卷 1-19页

作者： anh Phuong le Thi Masaru Ohshiro Takaomi Kobayashi Department of Science and Technology Innovation Nagaoka University of Technology Nagaoka Japan Kasai Corporation Niigata Japan

This study focused on the development and characterization of TiO2-PES composite fibers with varying TiO2 loading amounts using a phase inversion process. The resulting composite fibers exhibited a sponge-like structure with embedded TiO2 nanoparticles within a polymer matrix. Their photocatalytic performance for ammonia removal from aqueous solutions under UV-A light exposure was thoroughly investigated. The findings revealed that PeTi8 composite fibers displayed superior adsorption capacity compared to other samples. Moreover, the study explored the impact of pH, light intensity, and catalyst dosage on the photocatalytic degradation of ammonia. Adsorption equilibrium isotherms closely followed the Langmuir model, with the results indicating a correlation between qm values of 2.49 mg/g and the porous structure of the adsorbents. The research underscored the efficacy of TiO2 composite fibers in the photocatalytic removal of aqueous under UV-A light. Notably, increasing the distance between the photocatalyst and the light source resulted in de-creased hydroxyl radical concentration, influencing photocatalytic efficiency. These findings contribute to our understanding of TiO2 composite fibers as promising photocatalysts for ammonia removal in water treatment applications.

关键词： Ammonia Removal Photocatalyst TiO2-PES Composite Fiber Fibrous Material

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Clinical validation of the early embryo viability assessment system: Analysis for the blastocyst morphology and pregnancy outcomes

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Asian pacific Journal of Reproduction 2024年第5期13卷 219-227页

作者： Vu D Hop An M Cuong Phi T T anh Nguyen T L Huong le Hoang Nguyen V Hanh Assisted Reproductive Technology Centre Tam Anh General HospitalHanoiVietnam Institute of Biotechnology Vietnam Academy of Science and TechnologyHanoiVietnam

Objective:To determine the relationship between the early embryo viability assessment(EEVA)and blastocyst morphological parameters and pregnancy ***:This retrospective cohort study was conducted on 291 intracytoplasmic sperm injection cycles including 2522 embryos with indications of prolonging embryo culture to the blastocyst stage in the Genea embryo review incubator,and 511 single vitrified-warmed blastocyst transfer cycles from January 2020 to June *** EEVA system produced an EEVA score from E1(best)to E5(worse)for the potential of blastocyst *** morphology was *** association between the EEVA score and each type of blastocyst morphology,implantation rate,clinical pregnancy,and ongoing pregnancy were assessed using generalized estimating ***:The inner cell mass A(ICM A),trophectoderm A(TE A),blastocoele expansion degree of 3,4,5,6,7 rates were higher with lower the EEVA *** adjusted odd ratio(aOR)(E5 vs E1)was 0.3 for ICM A,0.174 for TE A and 0.210 for BL3,4,5,6,7(all P<0.001),suggesting a significant association between lower EEVA scores and improved embryo *** implantation,clinical pregnancy,and ongoing pregnancy rate were also higher with lower the EEVA *** aOR of E5 vs E1 was 0.245 for implantation,0.185 for clinical pregnancy and 0.200 for ongoing pregnancy rate(P<0.001).Conclusions:There were associations between blastocyst morphology,pregnancy outcome and EEVA *** good blastocyst morphology and pregnancy outcomes are higher with lower the EEVA score.

关键词： Automated embryo assessment Blastocyst Early embryo viability assessment Genea embryo review incubator

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Optimal Scheduling of Multiple Rail Cranes in Rail Stations with Interference Crane Areas

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Intelligent Automation & Soft Computing 2024年第1期39卷 15-31页

作者： Nguyen Vu anh Duy Nguyen le Thai Nguyen Huu Tho Faculty of Engineering and Technology Nguyen Tat Thanh UniversityHo Chi Minh City700000Vietnam

In this paper,we consider a multi-crane scheduling problem in rail stations because their operations directly influence the throughput of the rail *** particular,the job is not only assigned to cranes but also the job sequencing is implemented for each crane to minimize the makespan of cranes.A dual cycle of cranes is used to minimize the number of working cycles of *** rail crane scheduling problems in this study are based on the movement of *** consider not only the gantry moves,but also the trolley moves as well as the rehandle cases are also included.A mathematical model of multi-crane scheduling is *** traditional and parallel simulated annealing(SA)are adapted to determine the optimal scheduling *** examples are conducted to evaluate the applicability of the proposed *** of the proposed parallel SA is done by comparing it to existing previous *** of numerical computation highlighted that the parallel SA algorithm outperformed the SA and gave better solutions than other considered algorithms.

关键词： Multi-crane scheduling logistics containers makespan rail stations

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Exploring the Interplay between Job Stress,Work Performance,and Attitudes toward Professional Psychological Help among Employees

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International Journal of Mental Health Promotion 2024年第7期26卷 531-545页

作者： Cong Minh le Son Van Huynh Ky Luu quynh-Nhi Ngoc Ho Van Thi le Nguyen Vinh-Long Tran-Chi Center for Mental Health Research and Support University of Social Sciences and HumanitiesVietnam National University Ho Chi Minh CityHo Chi Minh City700000Vietnam Faculty of Psychology Ho Chi Minh City University of EducationHo Chi Minh City700000Vietnam Faculty of Tourism College of BusinessUniversity of Economics Ho Chi Minh CityHo Chi Minh City700000Vietnam Scientific Management Department Dong A UniversityDa Nang500000Vietnam

Objective:This study explores the interplay between job stress,job-related factors,work performance,and attitudes toward seeking professional psychological help among Vietnamese ***:A total of 374 employees in Vietnam were surveyed using random sampling and an online questionnaire from November 07 to November 28,*** data and self-reported from three scales:The New Job Stress Scale(NJSS),Work Performance(WP),and Attitudes Toward Seeking Professional Psychological Help(ATSPPH_SF)were ***:Significant variations were found across several variables,including forms of work,operating hours,education levels,monthly income,numbers of daily working hours,and the presence of a psychological counseling department within the *** analysis has highlighted direct relationships between key latent *** who were more open to seeking professional help tended to report higher levels of job *** negative relationship was found between job stress and attitudes toward seeking professional ***,work effort was positively associated with work *** analyses revealed the influence of co-worker support on role expectation conflict and work effort,role expectation conflict and work-life balance,as well as interactions between role expectation conflict and attitudes needed toward seeking professional *** analyses showed that work effort mediated relationships between openness to seeking professional help,co-worker support,work-life balance,role expectation conflict,and work *** toward seeking professional help also mediated relationships between work-life balance,job stress,and work ***:The study highlights the complex dynamics surrounding job stress,job-related factors,work performance,and attitudes toward seeking professional psychological help among Vietnamese *** highlights the importance of addressing help-seeking barriers,promoting work engagement

关键词： Stress co-worker support work-life balance role expectation conﬂict professional psychological help-seeking

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Prevalence, risk factors, and BRAF mutation of colorectal sessile serrated lesions among Vietnamese patients

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World Journal of Clinical Oncology 2024年第2期15卷 290-301页

作者： Nhu Thi Hanh Vu Huy Minh le Diem Thi-Ngoc Vo Hoang anh Vu Nhan Quang le Dung Dang Quy Ho Duc Trong Quach Department of Internal Medicine University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh 700000Viet Nam GI Endoscopy Department University Medical Center at Ho Chi Minh CityHo Chi Minh 700000Viet Nam Department of Histology-Embryology and Pathology University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh 700000Viet Nam Center for Molecular Biomedicine University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh 700000Viet Nam Department of Endoscopy Cho Ray HospitalHo Chi Minh 700000Viet Nam

BACKGROUND Sessile serrated lesions(SSLs)are considered precancerous colorectal lesions that should be detected and removed to prevent colorectal *** studies in Vietnam mainly investigated the adenoma pathway,with limited data on the serrated *** To evaluate the prevalence,risk factors,and BRAF mutations of SSLs in the Vietnamese *** This is a cross-sectional study conducted on patients with lower gastrointestinal symptoms who underwent colonoscopy at a tertiary hospital in *** were diagnosed on histopathology according to the 2019 World Health Organi-zation *** mutation analysis was performed using the Sanger DNA sequencing *** multivariate logistic regression model was used to determine SSL-associated *** There were 2489 patients,with a mean age of 52.1±13.1 and a female-to-male ratio of 1:*** prevalence of SSLs was 4.2%[95%confidence interval(CI):3.5-5.1].In the multivariate analysis,factors significantly associated with SSLs were age≥40[odds ratio(OR):3.303;95%CI:1.607-6.790],male sex(OR:2.032;95%CI:1.204-3.429),diabetes mellitus(OR:2.721;95%CI:1.551-4.772),and hypertension(OR:1.650,95%CI:1.045-2.605).The rate of BRAF mutations in SSLs was 35.5%.CONCLUSION The prevalence of SSLs was 4.2%.BRAF mutations were present in one-third of *** risk factors for SSLs included age≥40,male sex,diabetes mellitus,and hypertension.

关键词： Colorectal cancer Sessile serrated lesion BRAF mutation Risk factors Diabetes mellitus Hypertension

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大国数字货币对小国宏观金融形势溢出效应研究

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新金融 2024年第7期 53-58页

作者： anh H.le Alexander Copestake Brandon Tan Evan Papageorgiou SJay Peiris Umang Rawat 唐成千(译) 周正铭(译) 国际货币基金组织不详

央行数字货币(CBDC)快速发展,与传统法定货币不同,CBDC对宏观经济,尤其是对邻国的宏观经济有哪些影响值得关注。本文建立了一个考虑内生货币替代和金融摩擦的两国新凯恩斯模型,以考察大型外国经济体发行的稳定币对小型发展中经济体的影... 详细信息

央行数字货币(CBDC)快速发展,与传统法定货币不同,CBDC对宏观经济,尤其是对邻国的宏观经济有哪些影响值得关注。本文建立了一个考虑内生货币替代和金融摩擦的两国新凯恩斯模型,以考察大型外国经济体发行的稳定币对小型发展中经济体的影响。研究发现,外国稳定币为国内经济中的家庭提供流动性服务,并为国内通胀提供额外的对冲;同时,它的引入放大了货币替代效应,减少了银行中介作用,削弱了货币政策传导作用,加剧了衰退冲击的影响,增加了银行业经营压力;而资本管制提高了稳定币作为规避手段的使用率,增加了对外国冲击溢出效应的敞口。与国内中央银行数字货币不同,禁止外国稳定币支付可以缓解这些影响。本刊编译此篇国际货币基金组织(IMF)的工作论文,以期为读者带来启示。

关键词：央行数字货币(CBDC) 宏观金融形势溢出效应开放经济体金融摩擦

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Effective Evaluation of Using PIDOTIMOD in Treatment of Refractory Allergic Rhinitis

Effective Evaluation of Using PIDOTIMOD in Treatment of Refr...

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作者： Mai Nguyen quynh anh 大连医科大学

学位级别：硕士

目的观察匹多莫德对难治性过敏性鼻炎的治疗作用。方法研究以2019年8月至2020年8月期间于大连医科大学附属第一医院耳鼻喉科门诊诊断难治性过敏性鼻炎的68名患者为研究对象。患者随机分为两组,实验组和对照组。所有患者在治疗前均填写... 详细信息

目的观察匹多莫德对难治性过敏性鼻炎的治疗作用。方法研究以2019年8月至2020年8月期间于大连医科大学附属第一医院耳鼻喉科门诊诊断难治性过敏性鼻炎的68名患者为研究对象。患者随机分为两组,实验组和对照组。所有患者在治疗前均填写症状评分问卷,并进行鼻内窥镜检查,对鼻甲肿胀程度和鼻部分泌物情况进行评分。对照组患者给予口服抗组胺药和鼻喷布地奈德治疗;实验组患者在常规治疗基础上额外给予匹多莫德40mg,日两次口服。对比两组治疗前、治疗后两周、治疗后四周鼻部症状评分和鼻内窥镜检查评分评估匹多莫德治疗难治性过敏性鼻炎的临床效果。两组间比较采用配对T检验和Winconxon符号秩检验。结果治疗前对照组鼻部症状评分在鼻塞、流涕、鼻部刺痒感和喷嚏的得分分别是3.31±0.693,3.25±0.672,3.44±0.716,和 3.19±0.53;实验组分别是 3.22±0.659,2.75±0.672,3.16±0.723和2.94±0.669。两组之间差异无统计学意义(P>0.05)。鼻内窥镜下下鼻甲肿胀和鼻分泌物量评分在对照组分别是1.81±0.397,和2.69±0.471,实验组分别是1.84±0.369和2.47±0.621,差异无统计学意义(P>0.05)。治疗后两周对照组鼻部症状评分在鼻塞、流涕、鼻部刺痒感和喷嚏的得分分别是 2.94±0.669,2.81±0.644,2.75±0.762,和 2.44±0.504。实验组鼻部症状评分分别是 1.13±0.751,1.19±0.965,1.03±0.822,和 1.03±0.782。实验组较对照组在上述症状分别多下降1.81±0.082(61.56%),1.62±0.321(57.65%),1.72±0.06(62.54%),和1.41±0.278(57.78%),两组间比较,差异有统计学意义(P<0.05)。对照组鼻内窥镜下下鼻甲肿胀和鼻分泌物量评分分别是1.44±0.504和2.13±0.609;实验组分别是0.53±0.507和0.91±0.777,实验组下鼻甲肿胀和鼻内分泌物评分比对照组分别降低0.91±0.003(63.19%)和1.22±0.168(57.27%),两组对比差异有统计学意义(P<0.05)。治疗4周后对照组鼻塞、流涕、鼻部刺痒感和喷嚏的症状评分是0.47±0.507,0.50±0.508,0.44±0.564,和0.34 ± 0.483。实验组症状改善更多,比对照组减低1.84±0.186(79.65%),1.44±0.161(74.22%),1.69±0.143(79.34%),和 1.41±0.189(80.57%),差异有统计学意义(P<0.05)。对照组鼻内窥镜评分分别是1.19±.644和2.00±0.508,实验组评分分别为0.06±0.246和0.19±0.397,两组对比,实验组下鼻甲肿胀和鼻内分泌物评分比对照组分别降低1.13±0.398(94.95%)和1.81±0.111(90.5%)(P<0.05)。结论匹多莫德可以提高机体免疫力,辅助抗组胺药和鼻喷激素应用可以快速控制难治性过敏性鼻炎的临床症状和体征。

关键词：过敏性鼻炎过敏原免疫治疗匹多莫德

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Energy Measurement of Bubble Bursting Based on Vibration Signals

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Chinese Physics letters 2012年第6期29卷 185-188页

作者： LIU Xiao-Bo ZHANG Jian-Run LI Pu le Van-quynh School of Mechanical Engineering Southeast UniversityNanjing 211189

An experimental study of the energy of bubble bursting at the surface of a high-viscosity liquid on a cantilever beam is *** sudden bursting event of a bubble at the liquid surface can cause a vibration of the cantilever beam besides the acoustic wave and jet *** peaks of the vibration signal from the beam slightly lag the peaks of the acoustic signal,and the energy transferred to the vibration is larger than that transferred to the acoustic *** amplitude of the jet wave depends on the thickness of thc liquid hlm and the size of the *** results of the investigation can be used to understand the dynamic characteristics of bubble bursting.

关键词： wave bubble beam

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