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Thermoelectric properties of Bi0.5Sb1.4-xNaxIn0.1Te3 alloys

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Rare Metals 2019年第12期38卷 1187-1192页

作者： Yue-Zhen Jiang xing-kai Duan School of Electronic Engineering Jiujiang UniversityJiujiang 332005China School of Mechanical and Materials Engineering Jiujiang UniversityJiujiang 332005China

The Bi(0.5)Sb(1.4-x)NaxIn(0.1)Te3(x=0.02-0.20)alloys were fabricated by high vacuum melting and hotpressing *** phase structures and morphology of the bulk samples were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM),*** of In and Na co-doping on the electrical and thermal transport properties were studied from room temperature to 500 *** coefficient of the Bi(0.5)Sb(1.5)Te3 can be enhanced by substituting Sb with In and Na at near room *** electrical conductivity of the In and Na co-doped samples is lower than that of the Bi(0.5)Sb(1.5)Te3 alloy from room temperature to 500 *** and Na co-doping of appropriate percentage optimizes the thermal conductivity of the Bi(0.5)Sb(1.5)Te3 *** minimum value of thermal conductivity of Bi(0.5)Sb(1.36)Na(0.04)In(0.1)Te3 alloy is 0.45 W·m^(-1) K^(-1) at 323 *** leads to a great improvement in the thermoelectric figure of merit(zT).The maximum zT value reaches 1.42 at 323 K.

关键词： Microstructure Co-doping Thermal conductivity Electrical properties

A relative quantitative method to detect OCT4A gene expression by exon-junction primer and locked nucleic acid-modified probe

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第2期12卷 149-155页

作者： Jian-jun REN xing-kai MENG Department of General Surgery Xuanwu Hospital Capital Medical University Beijing 100053 China Department of General Surgery Affiliated Hospital of Inner Mongolia Medical College Hohhot 010050 China

Objective: OCT4A has been known to play a critical role in the maintenance of pluripotency of embryonic stem cells. Recent research has shown that OCT4A is also expressed in partial tumor cell lines and tissues. This study is aimed to develop a real-time reverse transcriptase polymerase chain reaction (RT-PCR) assay for relative quantitative detection of OCT4A mRNA and discrimination from OCT4B, pseudogene, and genomic contaminations. Methods: A locked nucleic acid (LNA)-modified probe was designed to discern the single base difference 352A/C to identify OCT4A mRNA. An exon-junction primer was designed to avoid false positive caused by genomic contaminations. In addition, a house keeping gene glyceraldehyde-3-phosphate dehydrogenase (GAPDH) was measured in parallel to normalize the differences between samples and operations. Results: Experiments showed that the newly established RT-PCR assay amplified the OCT4A mRNA selectively; OCT4A analogues gave negative signals. Cell lines nTERA-2 and HepG2 showed positive results in OCT4A expression, while for HeLa and 293 cell lines, as well as primary peripheral blood mononuclear cells (PBMCs), OCT4A expression was negative. Additionally, the relative quantity of OCT4A mRNA was calculated by cycle threshold (Ct) method and house keeping gene normalization. Conclusions: This technique proved to be effective for relative quantitation of OCT4A mRNA with high specificity.

关键词： OCT4A. Locked nucleic acid (LNA). Real-time Dolvmerase chain reaction (PCR)

花卉大棚喷药机器人远程控制系统设计——基于互联网

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农机化研究 2025年第2期47卷 61-67页

作者：陈可飞王铁广李文勤邢凯方赛银李明西南林业大学机械与交通学院昆明650224 安徽工程大学电气工程学院安徽芜湖241000

针对花卉薄膜大棚传统人工施药效率低、喷洒不均匀且漂浮药物对人体健康造成伤害等问题,设计了一种可实现远程手机控制的悬挂式喷药机器人系统。首先,根据花卉的生长特点和大棚空间结构,在不改变现有大棚结构的前提下,通过增设导轨的方... 详细信息

针对花卉薄膜大棚传统人工施药效率低、喷洒不均匀且漂浮药物对人体健康造成伤害等问题,设计了一种可实现远程手机控制的悬挂式喷药机器人系统。首先,根据花卉的生长特点和大棚空间结构,在不改变现有大棚结构的前提下,通过增设导轨的方式引入喷药机器人,并依据花卉精准施药的基本要求,在SolidWorks中建模并优化喷药机器人的机械结构;其次,以MCU esp8266模块作为核心控制单元,对继电器、电机、电磁阀和药液泵等硬件进行控制,采用PWM方式调节继电器的导通时间,进而实现喷药机器人根据不同行进速度作业;最后,通过WiFi无线通信模块结合物联网平台设计远程控制APP端,实现喷药机器人启停和环境数据采集等功能。系统测试表明:在无遮挡和有遮挡物环境中,数据传输的成功率分别约为98%和93%,丢包率分别约为1.98%和7%,且喷药机器人在不同的速度下运行稳定。测试结果能够为喷药机器人在大棚内行走稳定性和对花卉自动施药提供技术参考。

关键词：花卉大棚喷药机器人远程控制物联网手机APP

Highly efficient tandem Z-scheme heterojunctions for visible light-based photocatalytic oxygen evolution reaction

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Water Science and Engineering 2020年第4期13卷 299-306页

作者： Yi Lu xing-kai Cui Cheng-xiao Zhao Xiao-fei Yang College of Science Nanjing Forestry UniversityNanjing 210037China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China

Oxygen is important in maintaining a clean and reliable water *** heterojunction photocatalysts that can evolve oxygen from water splitting through an artificial Z-scheme pathway is a promising strategy for solving environmental *** this study,flower-like MoS2 nanostructures were fabricated via a simple hydrothermal process,and the electrostatic-based assembly ion-exchange method was used to construct a tandem Ag3PO4/MoS2/g-C3N4(AMC)*** as-synthesized photocatalyst exhibited significant improvements in harvesting visible light and transporting charge ***,the catalyst that was similar to the Z-scheme with intimate interface contact exhibited a strong oxygen evolution *** oxygen evolution activity of the optimal AMC-10 catalyst was approximately 11 times that of the pristine *** results indicated that addition of a small amount of the flower-like MoS2 could significantly enhance the efficiency of oxygen evolution by the *** findings in this study provide an alternative pathway for rationally designing efficient oxygen-evolving photocatalysts in order to improve the quality of water and rehabilitate the water environment.©2020 Hohai *** and hosting by Elsevier *** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Z-scheme Graphitic carbon nitride MoS2 Ag3PO4 Oxygen evolution reaction Water splitting

Studied microRNA gene expression in human hepatocellular carcinoma by micro RNA microarray techniques

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World Journal of Gastroenterology 2015年第44期21卷 12605-12611页

作者： Jian-Xiang Niu xing-kai Meng Jian-Jun Ren Department of General Surgery of the Affiliated Hospital of Inner Mongolia Medical University

AIM: To achieve a better understanding of the molecular mechanisms of micro RNA expression changes involved in hepatocellular ***: In this research process, patients were not treated with antivirals, immunosuppressants or immunomodulators for at least 6 mo before collecting serum. The study population was composed of 35 outpatient hepatitis B virus(HBV) cases and 12 healthy control cases from the Affiliated Hospital of Inner Mongolia Medical University(Inner Mongolia, China) from July 2013 to April 2014. The 35 HBV cases were divided into two groups: a hepatocirrhosis group with 20 cases and a liver cancer group with 15 cases. All 35 cases carried HBs Ag. The diagnostic criteria followed the European Association for the Study of the Liver 2012(EASL2012) standards. Micro RNA(mi RNA) was extracted from a control group of patients, a group with hepatocirrhosis and a group with liver cancer and its quality was analyzed using the human V2 micro RNA expression beadchip. Cluster analysis and a radar chart were then applied to the mi RNA ***: The mi RNA-qualified rate of human serum samples was 93%. The concentration of a single sample was > 200 ng/μL and the volume was > 5 μ*** mi RNA serum samples were uncontaminated by the genome. The Mann-Whitney test showed significant differences in mi RNA between each group, with a detection P-value of < 0.05. Illumina software was set up with Diff Score set to ± 13, meaning that P = *** were significant changes in mi RNA expression between the three groups. mi RNA-183 was the most up-regulated, followed by mi RNA-373. mi RNA-129 and mi RNA-188 were both strongly down-regulated and mi RNA-378 was down-regulated a small amount. The liver cancer group had greater changes, which indicated that changes in mi RNA expression levels were caused by hepatocirrhosis. The liver cancer disease course then further increased these changes. In the pentagon created by these five mi RNAs, three groups showed signif

关键词： Hepatocellular carcinoma Micro RNA Expression Micr

Novel invagination procedure for pancreaticojejunostomy using double purse string sutures:A technical note

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World Journal of Gastrointestinal Surgery 2023年第12期15卷 2792-2798页

作者： Jun Li He-Yuan Niu xing-kai Meng Department of Hepatobiliary Pancreatic and Splenic SurgeryThe Affiliated Hospital of Inner Mongolia Medical UniversityHohhot 010010Inner Mongolia Autonomous RegionChina

BACKGROUND Postoperative pancreatic fistula(POPF)is one of the most serious complications after pancreaticoduodenectomy(PD),and the choice of pancreaticojejunostomy(PJ)is considered a key factor affecting the occurrence of *** anastomotic methods and their modifications have been proposed,and there is no method that can completely avoid the occurrence of *** on our team’s experience in pancreatic surgery and a review of relevant literature,we describe a novel invagination procedure for PJ using double purse string sutures,which has resulted in favourable *** To describe the precise procedural steps,technical details and clinical efficacy of the novel invagination procedure for *** This study adopted a single-arm retrospective cohort study methodology,involving a total of 65 consecutive patients who underwent PD with the novel invagination procedure for PJ,including the placement of a pancreatic stent,closure of the residual pancreatic end,and two layers of purse-string *** data included age,sex,body mass index(BMI),pancreatic texture,pancreatic duct diameter,operation time,and blood *** outcomes included the operation time,blood loss,and incidence of POPF,postoperative haemorrhage,delayed gastric emptying,postoperative pulmonary infection,postoperative abdominal infection,and postoperative pulmonary *** The mean age of the patients was 59.12(±8.08)*** males and 25 females were included,and the mean BMI was 21.61 kg/m^(2)(±2.74).A total of 41.53% of patients had a pancreatic duct diameter of 3 mm or *** mean operation time was 263.83 min(±59.46),and the mean blood loss volume was 318.4 mL(±163.50).Following the surgical intervention,only three patients showed grade B POPF(4.62%),while no patients showed grade C *** patients(5/65,7.69%)were diagnosed with postoperative *** patients(6/65,9.23%)experienced delayed gastric *** patients(4/65,6.15%)developed post

关键词： Pancreatic anastomosis Pancreatojejunostomy Pancreatic fistula

Mononuclear phagocyte system in hepatitis C virus infection

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World Journal of Gastroenterology 2018年第44期24卷 4962-4973页

作者： Yu Yang Zheng--Kun Tu xing--kai Liu Ping Zhang Department of Hepatobiliaryand Pancreatic Surgery The First Hospital of Jilin University Institute of Translational Medicine The FirstHospital of Jilin University

The mononuclear phagocyte system （MPS）, which con-sists of monocytes, dendritic cells （DCs）, and macro-phages, plays a vital role in the innate immune defense against pathogens. Hepatitis C virus （HCV） is effcient in evading the host immunity, thereby facilitating its devel-opment into chronic infection. Chronic HCV infection is the leading cause of end-stage liver diseases, liver cirrhosis, and hepatocellular carcinoma. Acquired im-mune response was regarded as the key factor to era-dicate HCV. However, innate immunity can regulate the acquired immune response. Innate immunity-derived cytokines shape the adaptive immunity by regulating T-cell differentiation, which determines the outcome of acute HCV infection. Inhibition of HCV-specific T-cell responses is one of the most important strategies for im-mune system evasion. It is meaningful to illustrate the role of innate immune response in HCV infection. With the MPS being the important factor in innate immunity, therefore, understanding the role of the MPS in HCV infection will shed light on the pathophysiology of chronic HCV infection. In this review, we outline the impact of HCV infection on the MPS and cytokine production. We discuss how HCV is detected by the MPS and describe the function and impairment of MPS components in HCV infection.

关键词： Mononuclear phagocyte system Hepatitis C virus Monocyte Dendritic cell Macrophage

Management of a rare giant cell tumor of the distal fibula: A case report

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World Journal of Clinical Cases 2023年第2期11卷 394-400页

作者： Qing-Hong Fan Shan Long xing-kai Wu Qin Fang Department of Orthopaedics The Second Affiliated Hospital of Zunyi Medical UniversityZunyi 563000Guizhou ProvinceChina Department of Neonatology The Second Affiliated Hospital of Zunyi Medical UniversityZunyi 563000Guizhou ProvinceChina

BACKGROUND Aggressive giant cell tumor of the distal fibula is so rare that no consensus on a surgical strategy has been ***,an appropriate treatment strategy is still important to *** SUMMARY A 61-year-old man who had been experiencing progressive swelling of the left lateral malleolus accompanied by pain for half a year was presented at our *** had never been treated prior to coming to our *** imaging revealed a 10 cm×6 cm mass located in the body of the distal *** biopsies confirmed it was a giant cell *** examination revealed he had dilated cardiomyopathy with class 3 cardiac *** cardiologist and anesthesiologist determined that he could tolerate the operation,but the operation should be as short and minimally invasive as *** the patient’s consent,we performed a tibiotalar fusion and followed up with him for 2years,finding no recurrence and a satisfactory *** Tibial talus fusion is an effective method for the treatment of distal fibula tumors.

关键词： Giant cell tumor Distal fibula Tibiotalus fusion Ankle function Case report

A Systemic Review and Meta-analysis of the Effect of SARS-CoV-2 Infection on Sperm Parameters

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Research 2022年第2期2022卷 47-59页

作者： Xi Chen Jinli Ding Miao Liu kai xing Peng Ye Junxia Min Yan Zhang Tailang Yin Reproductive Medical Centre Renmin Hospital of Wuhan UniversityWuhanChina Department of Pediatrics Renmin Hospital of Wuhan UniversityWuhanChina Department of Cardiovascular Surgery Renmin Hospitalof Wuhan UniversityWuhanChina Deprtment of Pharmacy Renmin Hospital of Wuhan UniversityWuhanChina The First Afiliated Hospial Institute of Translational MedicineZhejiang University School of MedicineHangzhouChina Department of Clinical Laboratory Renmin Hospital of Wuhan UniversityWuhanChina

*** studies examined the putativefets of SARS-Cov-2infectionon spem parametersHoweve,the resuls remain *** this study,we conducted the most up-to-date systematic review and meta-analysis to investigate the effect of SARS-CoV-2 infection on sperm quality in COVID-19-positive and COVID-19-negative male *** databases were searched forliterature released through June 10,2022,containing estimates for the outcomes of interest Using a random-fects model(REM)or a fixed-ffects model(FEM),we analyzed the pooled *** quality of all included studies was asssed by the Newcastle-Ottawa scale In addition,we performed aquanttative and subgroup analysis of semen data across all included *** studies were extracted from 10 publications,involving a total of 1174 participates for *** parameters of 521 COVID-19 male patients and 653 controls were *** 8 case-control studies,the pooled mean dfference(MD)of total sperm motility was-5.37%(95%confidence interval(CI):-8.47 to-2.28:<0.05),suggesting that total motility was significantly impaired inmale COVID-19 *** analysis showed a significant decreasein semen volume,sperm concentration,and total motility in 238 patients with arecovery timeof less than 90 ***,in the other 6 included pre-to post-COVID-19 studies,the pooled MDs of sperm concentration,total sperm count,total motility,progressivemotility,and normal morphology were6.54×10^(6)/ml(95%CI:-10.27 to-2.81;p<0.05),38.89×10^(6)(95%CI:-59.20 to-18.58;p<0.05),-7.21%(95%CI:-14.36 to-0.07;p<0.05),-5.12%(95%CI:-8.71 to-1.53;p<0.05),and-1.52%(95%CI:-2.88 to-0.16;p<0.05),respectively,which indicate SARS-CoV-2 infection significantly affected these five sperm *** results revealed that SARS-CoV-2 infection was significantly correlated with decreased sperm *** six sperm parameters,total motility and sperm concentration were the most significantly decr

关键词： motility impaired analysis