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Nanomaterials for the abatement of cadmium (Ⅱ) ions from water/ wastewater

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Nano Research 2019年第7期12卷 1489-1507页

作者： kumar vikrant Vanish kumar Kowsalya Vellingiri Ki-Hyun Kim Department of Civil and Environmental Engineering Hanyang University222 Wangsimni-roSeoul 04763Republic of Korea National Agri-Food Biotechnology Institute (NABI) S.A.S. NagarPunjab 140306India Environmental and Water Resources Engineering Division Department of Civil Engineering IIT MadrasChennai 600036India

The rapid rise of modern industry is the source of unchecked effluents containing many pernicious heavy metals (e.g.,cadmium).To rehabilitate the ecology,food resources,and health of humans and animals,various conventional methodologies are being used in wastewater treatment facilities for the abatement of ***,the development of advanced,economical,and efficient adsorbents is needed because of the many shortcomings of conventional methods (e.g.,high cost,intensive operation,and inefficiency).Recent advancements in materials science and chemistry have introduced the use of nanomaterials,which possess very high specific surface areas and multiple functionalities,for the removal of specific targets such as *** review explores the recent developments and trends in nanomaterial adsorption technology for the mitigation of *** paper further surveys the present obstacles and future opportunities for the advancement of nanomaterial-based technologies in the area of water treatment.

关键词： nanomaterials cadmium adsorption pollution control water purification heavy metal

高速火焰喷涂VC-CuNiCr涂层的耐腐蚀性能

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Journal of Central South University 2024年第5期31卷 1385-1397页

作者： SINGH vikrant BANSAL Anuj SINGLA Anil kumar kumar Vijay Sant Longowal Institute of Engineering and Technology Longowal Sangrur 148106India Industrial and Production Engineering Department Dr B R Ambedkar National Institute of TechnologyJalandhar 144011India

本研究采用高速火焰喷涂(HVOF)沉积技术,将碳化钒(VC)和铜镍铬(CuNiCr)复合涂层应用于SS316不锈钢上,以解决不锈钢在海洋环境中的腐蚀问题。在室温环境下,在3.5%氯化钠溶液中进行电化学腐蚀,通过扫描电子显微镜(SEM)和能量色散光谱(EDS... 详细信息

本研究采用高速火焰喷涂(HVOF)沉积技术,将碳化钒(VC)和铜镍铬(CuNiCr)复合涂层应用于SS316不锈钢上,以解决不锈钢在海洋环境中的腐蚀问题。在室温环境下,在3.5%氯化钠溶液中进行电化学腐蚀,通过扫描电子显微镜(SEM)和能量色散光谱(EDS)对有涂层和未覆涂层样品的表面形貌进行检测。结果表明,涂层内由铜(Cu)、镍(Ni)和铬(Cr)组成的金属间黏合剂在氯化钠介质的影响下发生变质,从而导致出现衬底间的局部点蚀现象。有趣的是,在涂层配方中加入碳化钒(VC)显著地增强了表面的耐腐蚀性能,从而阻止了密闭腐蚀凹坑的出现。在不同类的涂层中,加入VC的效果最好,最小的腐蚀速率为72.38×10^(-3)mm/a,相比之下,SS316基底的腐蚀速率最快。

关键词：高速火焰喷涂碳化钒铜镍铬电化学腐蚀氯化钠溶液

Health care professional training in biomedical waste management at a tertiary care hospital in India

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The Journal of Biomedical Research 2016年第2期30卷 168-170页

作者： Pooja Sarotra Bikash Medhi Vipin Kaushal vikrant Kanwar Yogesh Gupta Anil kumar Gupta Department of Pharmacology Post Graduate Institute of Medical Education and ResearchChandigarh-160012India Department of Hospital Administration Post Graduate Institute of Medical Education and ResearchChandigarh-160012India

Dear Editor：Biomedical waste is any waste generated during the diagnosis,treatment or immunization of human beings or animals,in research activities pertaining to or in the production of or testing of biologicals,and all other categories waste generated by healthcare *** includes a broad range of materials from used needles and syringes,soiled dressings,body parts,diagnostic samples,blood,chemicals,pharmaceuticals,

关键词： biomedical professional chemicals India tertiary awareness sanitary hazardous disinfection medicines

Transaminitis is an indicator of mortality in patients with COVID-19:A retrospective cohort study

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World Journal of Hepatology 2020年第9期12卷 619-627页

作者： Vishnu Charan Suresh kumar Prateek Suresh Harne Samiran Mukherjee Kashvi Gupta Umair Masood Anuj vikrant Sharma Jivan Lamichhane Amit Singh Dhamoon Bishnu Sapkota Department of Internal Medicine SUNY Upstate Medical UniversitySyracuseNY 13202United States Department of Internal Medicine University of MichiganAnn ArborMI 48109United States Division of Gastroenterology SUNY Upstate Medical UniversitySyracuseNY 13202United States Division of Gastroenterology Syracuse VA medical CenterSyracuseNY 13202United States

BACKGROUND Since its discovery in Wuhan,China in December of 2019,the novel coronavirus has progressed to become one of the worst pandemics seen in the last 100 ***,there has been an increased interest in the hepatic manifestations of coronavirus disease 19(COVID-19).AIM To describe the demographic and clinical characteristics of COVID-19 positive patients and study the association between transaminitis and all-cause *** This is a descriptive retrospective cohort study of 130 consecutive patients with a positive COVID PCR test admitted between March 16,2020 to May 14,2020 at a tertiary care University-based medical *** Wilcoxon-rank sum test and paired t-test were used for comparing non-parametric and parametric continuous variables respectively and a multivariable logistic regression models to study the association between transaminitis and mortality using SAS version 9.4(SAS Institute,Cary,NC,United States).RESULTS Out of the 130 patients,73(56%)patients were found to have transaminitis and 57(44%)did *** compared to patients without transaminitis,the transaminitis group was found to have a higher median body mass index(30.2 kg/m2 vs 27.3 kg/m2,P=0.04).In the multivariate analysis those with transaminitis were found to have 3.4 times higher odds of dying as compared to those without transaminitis adjusting for gender,the Age-adjusted Charlson Comorbidity Index and admission to the intensive care unit(P=0.03).CONCLUSION Our study showed that transaminitis on admission was associated with severe clinical outcomes such as admission to the intensive care unit,need for mechanical ventilation,and mortality.

关键词： COVID-19 Liver Mortality Transaminitis Liver enzymes Aspartate aminotransferase Alanine aminotransferase

Alternate Technique for Doing Laparoscopic Cholecystectomy in Situs Inversus

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Surgical Science 2013年第10期4卷 448-452页

作者： vikrant Singh Zahur Hussain Shadilal Kachroo Vanita Gupta Harbinder Singh Mukesh kumar Barinder kumar Acharya Shree Chander College of Medical Sciences Jammu India Government Medical College Jammu India

A 45-year-old female with known situs inversus totalis presented with left-sided abdominal discomfort. Chest X-ray, abdominal ultrasonography and CT scan confirmed the diagnosis of a gallstone, as well as, situs inversus;Laparoscopic cholecystectomy was safely performed with mirror image of standard 4 ports. Callots triangle dissection was done with epigastric working port by surgeon, but gallbladder fossa dissection was done by surgical assistant from midclavicular port as main working port. Laparoscopic surgeon should be careful for view of reversed relationships and also for existence of other anomalies.

关键词： Situs Inversus Totalis Laparoscopic Cholecystectomy Anomalies

Geldanamycin Combination with Colcemid Induces Mitotic Arrest through Stabilization of bubR1 Mitotic Kinase in Human Tumor Cells

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Journal of Cancer Therapy 2013年第3期4卷 709-719页

作者： Pitke vikrant Vinay Lebaka Prasanna Anjaneya Reddy Jonnala Ujwal kumar Sugunan Sreedevi Upasana Sarangi Amere Subbarao Sreedhar CSIR—Centre for Cellular and Molecular Biology Hyderabad India

Mitosis-targeted anti-cancer therapies gained much attention in recent years. However, lack of tumor selectivity poses limitations to the current anti-mitotic drugs to be used as broad-spectrum anti-cancer agents. In this study, we show that combination treatment of colcemid, an inhibitor of microtubule polymerization with geldanamycin, an inhibitor of cancer chaperone, Hsp90 irreversibly targets mitosis through mitotic kinase bubR1 stabilization. When the individual and combination drugs treatments were tested against tumor cells (IMR-32 and HeLa) and non-tumor cells (SRA01), the combination treatment showed significant increase in cytotoxicity only in tumor cells followed by G2/M cell cycle block. The IMR-32 cells showed enhanced cytotoxicity in response to combination treatments, compared to HeLa cells. Further studies revealed that the G2/M arrest in IMR-32 correlates with both increased bubR1 nuclear localization and metaphase arrest. The siRNA knockdown of bubR1 has decreased tumor cell response to geldanamycin suggesting Hsp90-dependent regulation of bubR1. The combination treatment also showed inactivation of non-canonical β-catenin signaling suggesting inhibition of cancer growth. In addition, the combination treatment has significantly affected the distribution and functions of bubR1 downstream mitotic kinases such as aurks and plk1 indicating the combinatorial attack of combination treatment. In conclusion, we demonstrate that colcemid and GA combination treatment compromises the division potential of tumor cells interfering with the mitosis through bubR1 kinase.

关键词： Hsp90 Geldanamycin bubR1 Cell Cycle Tumor Cells