检索结果-南通市图书馆

Platinum Difluoride: A Theoretical and Computational Based Study

在线全文

学校读者我要写书评

暂无评论

Advances in Biological Chemistry 2023年第6期13卷 236-246页

作者： Anil kumar Soni Vishnu kumar sahu Department of Chemistry Shia P. G. College Lucknow India Department of Chemistry Maharani Lal Kunwari P. G. College Lucknow India

Platinum on reaction with halogen forms three halides viz., platinum (II) chloride, platinum (II) bromide and platinum (II) iodide, except platinum (II) fluoride. In this research work, the not existence of PtF2 has been studied theoretically. For this thermodynamic, valence bond theory and molecular orbital theory based study have also been performed on this molecule. In order to obtain minimum energy structure we optimized the geometry of this halide by opting AM1 for thermodynamic work and EHT for population analysis. All the calculations were performed on CAChe software. The thermodynamic study supported the presumption of disproportion reaction: 2PtF2 →Pt + PtF4. V.B.T showed sd-hybridization rather than sp-hybridization. This was supported by our data as evaluated theoretically by adopting Landis concept, which showed negligible contribution of 5s-orbital of platinum. Mulliken’s population analysis based studies have pointed that the overlap is very poor due to the dis-similarity of energy of combining orbitals of Pt and F atom. The ΣΦ is very small that is 0.2. This also proved that PtF2 failed to match the criteria of overlapping and thus MOT too. Using eigenvalues and population analysis MO diagram has also been drawn, which clearly supported non-existence of PtF2 in nature but its existence in situ and thus also supported the presumption of disproportionation reaction.

关键词： PtF2 Molccecular Mechanics Quantum Mechanism VBT and MOT

Bone metastases from primary hepatocellular carcinoma simulating multiple myeloma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2005年第2期4卷 308-310页

作者： dinesh Chandra Doval Komal Bhatia Ashok kumar Vaid kumar Prabhash Amarnath Jena Digant Hazarika Departments of Medical Oncology New Delhi India Departments of Medical Oncology Rajiv Gandhi Cancer Institute and Research Center Rohini Sector-5 Delhi 110085 India Departments of MRI Rajiv Gandhi Cancer Institute and Research Center Rohini Sector-5 Delhi 110085 India Departments of pathology Rajiv Gandhi Cancer Institute and Research Center Rohini Sector-5 Delhi 110085 India

A 65-year-old man presented with bone pains and anemia. Skull X-ray revealed multiple osteolytic lesions. The pa- tient was evaluated for multiple myeloma but detailed workup revealed the diagnosis of primary hepatocellular carcinoma (HCC) with osteolytic bone metastases. Thus, bone metastases due to HCC, although rare, should be considered in patients presenting with bone pains due to os- teolytic lesions.

关键词： hepatocellular carcinoma bone metastases multiple myeloma

Spatially resolved transcriptomics: a comprehensive review of their technological advances, applications, and challenges

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2023年第9期50卷 625-640页

作者： Mengnan Cheng Yujia Jiang Jiangshan Xu Alexios-Fotios AMentis Shuai Wang Huiwen Zheng Sunil kumar sahu Longqi Liu Xun Xu BGI-Hangzhou HangzhouZhejiang 310012China BGI-Shenzhen ShenzhenGuangdong 518103China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Agricultural Genomics BGI-ShenzhenShenzhenGuangdong 518083China Guangdong Provincial Key Laboratory of Genome Read and Write ShenzhenGuangdong 518120China

The ability to explore life kingdoms is largely driven by innovations and breakthroughs in technology,from the invention of the microscope 350 years ago to the recent emergence of single-cell sequencing,by which the scientific community has been able to visualize life at an unprecedented *** recently,the Spatially Resolved Transcriptomics(SRT)technologies have filled the gap in probing the spatial or even three-dimensional organization of the molecular foundation behind the molecular mysteries of life,including the origin of different cellular populations developed from totipotent cells and human *** this review,we introduce recent progresses and challenges on SRT from the perspectives of technologies and bioinformatic tools,as well as the representative SRT *** the currently fast-moving progress of the SRT technologies and promising results from early adopted research projects,we can foresee the bright future of such new tools in understanding life at the most profound analytical level.

关键词： Spatially resolved transcriptomics Bioinformatic tools Spatial single-cell Cell communications Tissue dissection Three-dimensional organ

Ascaridole: A phytochemical of modern medicinal perspective

在线全文

学校读者我要写书评

暂无评论

Journal of Coastal Life Medicine 2017年第2期5卷 88-94页

作者： dinesh kumar Patel Christian School of Pharmacy Faculty of Health SciencesSam Higginbottom Institute of AgricultureTechnology and Sciences(SHIATS)Deemed-to-be UniversityAllahabad211007Uttar PradeshIndia

American wormseed oil, also known as Chenopodium ambrosioides oil, is obtained from the herbs of the genus Chenopodium which comprises more than 200 species and belongs to the geographical region of Asia, Europe, China, India, America and other *** has been traditionally used for digestive, respiratory, diabetes, uro-genital, nervous and vascular disorders and has antihelminthic, vermifuge, emmenagogue sedative, antipyretic, antirheumatic and abortifacient activities. Ascaridole is a bicyclic monoterpene commonly known as ascarisin or 1,4-epidioxy-p-menth-2-ene which have sedative, antifungal and pain-relieving properties. It is a potent inhibitor of Trypanosoma cruzi,Plasmodium falciparum, and Leishmania amazonensis and is well known for its worm-expelling potential. Ascaridole was firstly isolated by a German pharmacist in the 1900's and at that time it was one of the best antihelmintics for the treatment of ascarids and hookworms in humans and other species like cats, dogs, horses and pigs. Ascaridole could be extracted by using a non-polar solvent hexane due to its very poor solubility in water. From the literature support, it has been proved that ascaridole have very high potential in the modern and other system of medicine for the treatment of various disorders. So on the basic of its uses, here we have collected and compiled all the data regarding its medicinal uses, pharmacological activities and analytical techniques of the ascaridole in the present review and expected that this review will be beneficial for the researcher in the field of medicine and other allied science.

关键词： Analytical techniques Antihelminthic Ascaridole Chenopodium ambrosioides Medicinal uses Pharmacological uses

Structural,Dielectric,and Magnetic Studies on Electrospun Magnesium Ferrite-Polyvinylidene Fluoride Core–Shell Composite Fibers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 557-562页

作者： V.Revathi S.dinesh kumar P.Chithra Lekha V.Subramanian T.S.Natarajan C.Muthamizhchelvan New Horizon College of Engineering Bangalore 560103India Microwave Laboratory Department of PhysicsIIT MadrasChennai 600036India SRM University KattankulathurChennai 603203India

The sub-micron（of the order of 150 nm） thick core–shell composite fibers of magnesium ferrite-polyvinylidene fluoride are prepared by *** loading of magnesium ferrite is varied from 1 to 10 wt%.The study results by X-ray diffraction,scanning electron microscope,and infra-red spectroscopy indicate the formation of core–shell structure and an enhancement in the amount of b-phase compared to a-phase in the polyvinylidene *** particle size of the magnesium ferrite in the fiber is evaluated to be 30 *** low frequency dielectric studies indicate that the addition of the magnesium ferrite increases the polarization resulting in the increase in the dielectric constant but decreases the dielectric *** magnetization measurements indicate an increased value of coercivity compared to bulk due to the nano-size of the magnesium *** microwave absorption at the ferromagnetic resonance increases with the increase in the concentration of magnesium *** resonance field is found to vary with the loading of MFO.

关键词： Electrospinning Polymer composites Dielectric properties Magnetic properties X-ray diffraction(XRD) Microwave absorption

Noscapine shows antimalarial activity against Plasmodium falciparum 3D7,its clinical isolate Pf140/SS,and Plasmodium berghei ANKA

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2024年第8期14卷 350-358页

作者： Swaraj kumar Babu Sameer Maharana Satyaranjan Chhatria Dibya Ranjan Sahoo Ashirbad Nanda Satish Kanhar Prativa KBehera Sanjib Mohanty Pradeep kumar Naik Praveen Kishore sahu Centre of Excellence in Natural Products and Therapeutics Department of Biotechnology and BioinformaticsSambalpur UniversityJyoti ViharSambalpur OdishaIndia Department of Molecular Biology and Infectious Diseases Community Welfare Society HospitalRourkelaOdishaIndia Molecular&Immunology Laboratory Infectious Disease Biology UnitIspat General HospitalRourkelaOdishaIndia Department of Pharmacy Centurion University of Technology and ManagementBhubaneswarOdishaIndia

Objective:To evaluate the antimalarial activity of noscapine against Plasmodium falciparum 3D7 strain(Pf3D7),its clinical isolate(Pf140/SS),and Plasmodium berghei ANKA(PbA).Methods:Using ring-stage survival assay,phenotypic assessments,and SYBR-green-based fluorescence assay,the antimalarial activities of noscapine were assessed compared with dihydroartemisinin(DHA)in in vivo and in vitro *** addition,hemolysis and cytotoxicity tests were carried out to evaluate its ***-PCR assay was also conducted to determine the effect of noscapine on papain-like cysteine protease Plasmodium falciparum falcipain-2(PfFP-2).Results:The antimalarial efficacy of noscapine against Pf3D7 and Pf140/SS was comparable to DHA,with IC50 values of(7.68±0.88)and(5.57±0.74)nM/mL,respectively,and>95%inhibition of PbA infected *** also showed a safe profile,as evidenced by low hemolysis and cytotoxicity even at high ***,PfFP-2 expression was significantly inhibited in both noscapine-treated Pf3D7 and Pf140/SS(P<0.01).Conclusions:Noscapine has antimalarial properties comparable to standard antimalarial DHA with better safety profiles,which may be further explored as a therapeutic candidate for the treatment of malaria.

关键词： Malaria Plasmodium falciparum Plasmodium berghei Noscapine Antimalarial Dihydroartemisinin Cytotoxicity Falcipain-2

Combustion Characteristics of Sewage Sludge and Algae

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Resources 2016年第4期7卷 205-213页

作者： Yaman kumar sahu Pravin kumar sahu Suryakant Chakradhari Khageshwar Singh Patel School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India

Sewage sludge is a good source of energetically desirable compounds and green algae in developing country like India. In this work, the combustion characteristics of sewage sludge and green algae are described. The calorific value (CV) of dried sewage sludge (n = 7) and green algae (n = 11) was ranged from 1800 to 6250 and 3700 to 6280 kcal/kg with mean value of 3999 ± 1347 and 4428 ± 547 kcal/kg, respectively. The effect of proximate variables and water quality parameters in the CV of sludge and algae are discussed.

关键词： Sewage Sludge Algae Water Quality Caloric Value

Tilted Bianchi Type VI0 Cosmological Model in Saez and Ballester Scalar Tensor Theory of Gravitation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2010年第1期1卷 67-69页

作者： Subrata kumar sahu 不详

Tilted Bianchi type VI0 cosmological model is investigated in a new scalar tensor theory of gravitation pro-posed by Saez and Ballester (Physics Letters A 113:467, 1986). Exact solutions to the field equations are derived when the metric potentials are functions of cosmic time only. Some physical and geometrical proper-ties of the solutions are also discussed.

关键词： Saez and Ballester Theory Tilted Cosmological Model Scalar Field

Ferroelectric composite-based piezoelectric energy harvester for selfpowered detection of obstructive sleep

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materiomics 2023年第4期9卷 609-617页

作者： Swati Panda Hyoju Shin Sugato Hajra Yumi Oh Wonjeong Oh Jeonghyeon Lee P.M.Rajaitha Basanta kumar Panigrahi Jyoti Shukla Alok kumar sahu Perumal Alagarsamy Hoe Joon Kim Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu42988South Korea Department of Electrical Engineering Siksha‘O’Anusandhan UniversityBhubaneswar751030India Department of Electrical Engineering Poornima College of EngineeringJaipur303903India Department of Physics Indian Institute of Technology-GuwahatiAssam781039India Robotics and Mechatronics Research Center Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu42988South Korea

Lead-free piezoelectric ceramic is a promising material for energy harvesters,as they have superior electromechanical,ferroelectric,and piezoelectric *** addition,piezoelectric ceramics can be blended with polymer to achieve high-flexibility polymer-ceramic composites,providing mechanical robustness and *** this context,a new lead-free ferroelectric material,having the chemical formula SrTi_(2)O_(5)(STO),was synthesized using a high-temperature solid-state *** analyses of the structural,morphological,and electrical properties of the synthesized material were *** crystallizes with orthorhombic symmetry and space group of *** frequency and temperature-dependent dielectric parameters were evaluated,and impedance spectroscopy shed light on the charge *** PDMS-STO composites at different mass fraction of the STO were prepared using a solvent casting route,and a corresponding piezoelectric nanogenerator(PENG)was *** electrical output of the different PENG by varying massfractions of STO in PDMS and varying force were *** 15%(in mass)PENG device delivered the highest peak-to-peak voltage,current,and power density of 25 V,92 nA,and 0.64 mW@500 MU,*** biomechanical energy harvesting using the PENG device by daily human motions,bending of the device,and attaching the device to laboratory equipment was *** the PENG device was attached to the human throat region,and snoring signals were recorded.A classification model was designed employing the convolutional neural network(CNN)*** have been laid to differentiate between normal and abnormal snores,which could help the patient with screening and early disease detection,contributing to self-powered healthcare applications.

关键词： Lead-free Ferroelectric Nanogenerator Sleepdisorder