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Co-Doped rare-Earth (La, Pr) and Co-Al Substituted M-Type Strontium Hexaferrite: Structural, Magnetic, and Mossbauer Spectroscopy Study

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Materials Sciences and Applications 2020年第7期11卷 474-493页

作者： Madhav L. ghimire Dom L. Kunwar Jiba N. Dahal Dipesh Neupane Sunghyun Yoon Sanjay r. Mishra Department of Physics and Materials Science The University of Memphis Memphis TN USA Department of Physics Virginia Commonwealth University Richmond VA USA Department of Physics Kent State University Kent OH USA Department of Physics and Astronomy Truman State University Kirksville MO USA Department of Physics Gunsan National University Gunsan South Korea

The present study investigates the influence of La3+ and Pr3+ doping on the structural, magnetic properties, and hyperfine fields of Sr0.7rE0.3Fe12-2x CoxAlxO19, (rE: La3+ and Pr3+, x = 0.0 - 0.8) hexaferrite compounds prepared via auto-combustion technique. The XrD analysis shows a linear decrease in a and c lattice and unit cell volume contraction with the content x. The room temperature magnetic study shows that for the Pr3+ doped Sr0.7Pr0.3Fe12-2x CoxAlxO19 (Pr3+-SrM), the magnetization value monotonically decreases while for La3+ doped Sr0.7La0.3Fe12-2xCoxAlxO19 (La3+-SrM) magnetization value shows a noticeable increase in magnetization value with x. The coercivity of the Pr3+-SrM compound was observed to decrease while that of the La3+-SrM compound showed a marked 40% increase at x = 0.2 (~5829 Oe) in comparison to undoped SrFe12O19 (~3918 Oe). A difference in Curie temperature was also observed, with Tc ~ 525°C at x = 0.4 for Pr3+-SrM and Tc = 505°C for x = 0.4 for La3+-SrM compound. The observed differences in magnetic properties have been explained on the basis of the site occupancy of Co2+ and Al3+ in the presence of rare-earth ions. The presence of non-magnetic rare-earth ion, La3+, improved saturation magnetization, and coercivity and deemed suitable replacement for Sr2+. The hyperfine parameters namely quadrupole shift showed a decrease with the La3+ or Pr3+ doping independent of (Co2+-Al

关键词： Doped Hexaferrite M-Type Hexaferrite X-ray Diffraction Mossbauer

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Microbiological and Antibiotic Susceptibility Patterns in Cardiothoracic and Vascular Intensive Care Unit of a Tertiary Level Hospital in Nepal

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World Journal of Cardiovascular Surgery 2023年第3期13卷 61-70页

作者： Bibhush Shrestha Priska Bastola Bishwas Pradhan Arjun Gurung Basanta ghimire Anil Bhattarai Department of Cardiothoracic and Vascular Anesthesiology Manmohan Cardiothoracic Vascular and Transplant Center Tribhuvan University Kathmandu Nepal Department of Cardiothoracic and Vascular Surgery Manmohan Cardiothoracic Vascular and Transplant Center Tribhuvan University Kathmandu Nepal

Background: Sepsis has been one of the most important conditions for morbidity and mortality of Intensive care unit (ICU) patients. Antibiotics remain one of the major combating factors for it. Indiscriminate antimicrobial usage and poor prescription practices have contributed to the development of multidrug resistant (MDr) organisms. Therefore, the current study was designed to evaluate the spectrum, and susceptibility patterns of pathogens isolated from patients admitted to our Cardiothoracic and Vascular Intensive care unit. Materials and Methods: The study was conducted in Cardiothoracic and Vascular ICU of a tertiary care teaching hospital from February 2019 to March 2021. Samples (blood, urine, wound swab, tracheal aspirate, and central venous catheter tip) for culture were taken from all the patients in Sepsis admitted in Cardiothoracic and Vascular ICU above 18 years of age during the study period. The culture reports (microbiological profile and their susceptibility pattern) were collected and data collection of all enrolled patients was done. results: Out of the total 128 samples studied 75 (58.5%) were culture positive. The predominant organisms isolated were Gram negative organisms (Klebsiella, Pseudomonas, Acinetobacter, followed by E. coli). The highest prevalence of microbial growth was found in tracheal aspirate (46.8%), followed by blood (21.8%). Antibiotic susceptibility results showed the highest sensitivity of those common pathogens towards higher antibiotics only (especially Polymyxin B and Colistin). Conclusion: The emergence of multidrug resistant organisms and lesser availability of a higher group of antibiotics is a major concern. So there is a need for regular hospital based antibiograms, strict infection control programs, and implementation of antimicrobial stewardship programmes for guiding clinicians in choosing appropriate therapy and preventing the surge of multidrug resistant organisms.

关键词： Sepsis Antibiotics Intensive Care Unit

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胃肠道外周T细胞淋巴瘤CT征象分析

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临床放射学杂志 2011年第7期30卷 1021-1025页

作者：朱凌吴光耀 Prasanna ghimire 徐丽莹武汉大学中南医院Mr室湖北430071

目的分析胃肠道外周T细胞淋巴瘤(peripheral T-cell lymphomas,PTCLs)CT特征及其与临床病理联系。资料与方法回顾性分析经病理证实的15例胃肠道PTCLs,分析病变部位、数目、形态、强化方式、淋巴结肿大、其他器官受累及并发症等CT征象;... 详细信息

目的分析胃肠道外周T细胞淋巴瘤(peripheral T-cell lymphomas,PTCLs)CT特征及其与临床病理联系。资料与方法回顾性分析经病理证实的15例胃肠道PTCLs,分析病变部位、数目、形态、强化方式、淋巴结肿大、其他器官受累及并发症等CT征象;并与胃肠道B细胞淋巴瘤CT特点进行比较。结果 15例胃肠道PTCL中胃受累6例,肠道受累(即肠病相关T细胞淋巴瘤,enteropathy-associated T-cell lymphoma,EATL)9例。7例为多发病灶(46.7%),8例为单发病灶(53.3%)。1例EATL表现为息肉型,其余14例表现为管壁增厚型,其中轻度增厚3例,中度增厚10例,显著增厚1例。9例病灶轻度均匀强化,6例病灶轻度不均匀强化。5例伴弥漫性非显著性淋巴结肿大,3例伴局限性非显著性淋巴结肿大。4例合并其他脏器病变,1例并发胃穿孔,5例(5/9,55.6%)并发肠穿孔。9例EATL平均年龄37.1岁,累及结肠5例,回肠1例,回盲部1例,回肠、回盲部同时受累1例,回、结肠同时受累1例;结肠受累共6例(6/9,66.9%)。结论胃肠道PTCLs的CT表现具有一定特征性;与B细胞淋巴瘤相比,PTCLs病变易多发,多为轻中度管壁增厚型;易合并胃肠穿孔;与西方国家比较,国人EATL多见于青年男性,呈结肠易受累的趋势。

关键词：胃肠道外周T细胞淋巴瘤体层摄影术,X线计算机 B细胞淋巴瘤

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Metals Assessments in the Water Bodies of Sagarmatha National Park and Buffer Zone, Nepal

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Journal of Water resource and Protection 2014年第2期6卷 68-74页

作者： Narayan Prasad ghimire Bharat Babu Shrestha Pramod Kumar Jha Gianumberto Caravello Central Department of Botany Tribhuvan University Kathmandu Nepal Department of Environment health and hygiene Padova University Padova Italy

Sagarmatha (Mt. Everest) National Park (SNP) of Nepal is a popular international eco-touristic destination. In the last few years, tourist flow has increased tremendously generating anthropogenic pressure on natural environment. Generation of huge solid waste, open defecation and poor septic tank condition of toilets have been considered as the major sources of pollution to water bodies in the area. Heavy metals, such as cadmium, copper, lead, chromium and mercury, are important environmental pollutants, particularly in areas with high anthropogenic pressure. Their presence in the atmosphere, soil and water, even in traces can cause serious problems to all organisms, and heavy metal bioaccumulation in the food chain especially can be highly dangerous to human health. Heavy metals (Cu, Pb, Mn, Fe and Zn) and metals (Na, Mg) were analyzed. Thirty nine (13 samples in each year) water samples were collected from river and springs to assess the water quality in the SNP and its buffer zone. Water quality in the SNP has been found degraded in terms of heavy metals;particularly Na and Mg contents were found higher when compared with the earlier report. Iron content in 46% samples was found more than WHO and Nepalese standard for drinking water. The river water quality in general still stands good in terms of standard for drinking water (WHO, Nepal standard) however degradation process has accelerated.

关键词： Water Quality Solid Waste Tourism Open Defecation Anthropogenic Pressure Poor Septic Tank

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The Comparison of Diagnostic Significance of Narrow Band Imaging in Contrast of White Light Endoscopy in the Assessment of Nasopharyngeal Cancer

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Journal of Cancer Therapy 2020年第3期11卷 160-171页

作者： Paudel Sharad Zhichun Huang Xin Yang Wu Cao ghimire Pratiksha Kharbuja Naresh School of Medicine South East University Nanjing China Otorhinolaryngology and Head and Neck Surgery Department Zhongda Hospital Nanjing China

Background: Narrow band imaging (NBI) is reported to improve the diagnostic importance of nasopharyngeal cancer. The purpose of this review was to evaluate the diagnostic significance of NBI in the literature and compare it to the conventional white light endoscopy. The use of narrow band imaging (NBI) and further technological achievements concerning the resolution and magnification of endoscopic images have in the past 15 years. With the use of NBI, superficial mucosal lesions, which may be missed by standard WLI endoscopy, can be identified easily by their neoangiogenic pattern. Objective:?To assess diagnostic value of the narrow band imaging and white light endoscopy in nasopharyngeal carcinoma and compare diagnostic values (sensitivity, specificity, positive predictive value and negative predictive value) with white light endoscopy. Search Methods: From 2010 to 2020, data was searched from electronic databases such as PubMed, web of science. We used narrow band imaging as a key word accordance with diagnostic modalities such as sensitivity, specificity, PPV and NPV and data were collected. results: We have found mainly 6 studies have discussed about diagnostic value of endoscopy in nasopharyngeal carcinoma in the total of 2746 suspected patients. Among them, 5 studies have compared diagnostic values such as sensitivity, specificity, positive predictive value and negative predictive value between NBI and WLE. Among 5 studies, 4 studies have found higher sensitivity in NBI, 2 studies found higher 1 equal to WLE specificity in NBI. 3 studies have compared PPV and NPV between NBI and WLE. Among them, all the studies found higher PPV and NPV in NBI than WLE. Conclusion: recently?developed narrow band imaging has a great significance in the diagnosis of nasopharyngeal carcinoma. Although NBI has also encountered some problem such as contact bleeding and darker image. So, further evaluation should be done.

关键词： Narrow Band Imaging White Light Endoscopy Head and Neck Neoplasms Nasopharyngeal Carcinoma NBI Classification IPCLs Image Enhanced Endoscopy

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沿海拔梯度的表型可塑性影响银胶菊叶甲的取食效率和发育

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昆虫学报 2020年第9期63卷 1117-1124页

作者： Daya ram BHUSAL Kishor Chandra ghimire rekha UPADHYAY Mahadev BISTA Bhupendra KUMAr Central Department of Zoology Tribhuvan UniversityKirtipurKathmanduNepal Primary School NuawnVaranasiIndia Department of Zoology Siddha Nath Science Campus(TU)MahendranagarNepal Department of Zoology Banaras Hindu UniversityVaranasiUttar PradeshIndia

【目的】本研究旨在弄清楚生态气候因子是否影响尼泊尔银胶菊Parthenium hysterophorus盛产区中银胶菊叶甲Zygogramma bicolorata成虫后代的形态学测量参数和基础生物学。【方法】从尼泊尔Kathmandu(24℃,海拔1400 m,温带气候),Chitwan... 详细信息

【目的】本研究旨在弄清楚生态气候因子是否影响尼泊尔银胶菊Parthenium hysterophorus盛产区中银胶菊叶甲Zygogramma bicolorata成虫后代的形态学测量参数和基础生物学。【方法】从尼泊尔Kathmandu(24℃,海拔1400 m,温带气候),Chitwan(25℃,海拔415 m,热带或亚热带气候)和Mahendranagar(34℃,海拔229 m,湿润-亚热带气候)地区采集银胶菊叶甲成虫,在最适室内条件下评估各生态气候区中其F 1代4龄幼虫和雌成虫的取食特征。我们假定在自由取食和最适非生物条件下饲养的后代将不会受到食物和气温的间接影响,不管亲本属于哪一生态气候区,后代利用食物的能力一致。【结果】然而,我们发现,尽管在最适条件下饲养,银胶菊叶甲后代的体型和取食特征与其亲本相似。体型大的亲本(来自Kathmandu地区),其后代体型也大,但是其食物利用效率比体型小的亲本(来自Chitwan和Mahendranagar地区)所产后代小。这3个生态气候区中,与幼虫相比正在发育的雌成虫均表现出体重增加而食物利用效率降低。【结论】这些发现说明,食物和最适非生物条件的间接影响可能不影响银胶菊叶甲后代的表型可塑性,后代的体型和取食特征与亲本相似。发生的可遗传的变化可能是由于种内的遗传多样性。我们期望这些发现有助于理解气候变化背景下银胶菊叶甲成虫的表型可塑性、分布格局和取食行为。

关键词：银胶菊叶甲银胶菊表型可塑性生物防治取食特征气候

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Evaluating active leprosy case identifcation methods in six districts of Nepal

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Infectious Diseases of Poverty 2023年第6期12卷 105-106页

作者： ram Kumar Mahato Uttam ghimire Madhav Lamsal Bijay Bajracharya Mukesh Poudel Prashnna Napit Krishna Lama Gokarna Dahal David T.S.Hayman Ajit Kumar Karna Basu Dev Pandey Chuman Lal Das Krishna Prasad Paudel Epidemiology and Disease Control Division Department of Health Services Ministry of Health and Population Kathmandu Nepal Epidemiology and Disease Control Division-Malaria Program Management Unit- SCI-GF Kathmandu Nepal Leprosy Control & Disability Management Section EPidemiology and Disease Control Division DoHS Kathmandu Nepal Lalgadh Leprosy Hospital & Service Center Nepal Leprosy Trust Lalgadh Nepal Molecular Epidemiology and Public Health Laboratory Infectious Disease Research Centre Hopkirk Research Institute Massey University Palmerston North New Zealand Center for Health and Disease Studies-Nepal Kathmandu Nepal DEJIMA Infectious Disease research Alliance Nagasaki University Nagasaki Japan

Background Nepal has achieved and sustained the elimination of leprosy as a public health problem since 2009,but 17 districts and 3 provinces with 41%(10,907,128)of Nepal’s population have yet to eliminate the *** cases and grade-2 disabilities(G2D)indicate recent transmission and late diagnosis,respectively,which necessitate active and early case *** operational research was performed to identify approaches best suited for early case detection,determine community-based leprosy epidemiology,and identify hidden leprosy cases early and respond with prompt *** Active case detection was undertaken in two Nepali provinces with the greatest burden of leprosy,Madhesh Province(40%national cases)and Lumbini Province(18%)and at-risk prison populations in Madhesh,Lumbini and Bagmati *** detection was performed by(1)house-to-house visits among vulnerable populations(n=26,469);(2)contact examination and tracing(n=7608);in Madhesh and Lumbini Provinces and,(3)screening prison populations(n=4428)in Madhesh,Lumbini and Bagmati Provinces of *** case direct medical and nonmedical costs for each approach were *** New case detection rates were highest for contact tracing(250),followed by house-to-house visits(102)and prison screening(45)per 100,000 population ***,the cost per case identifed was cheapest for house-to-house visits[Nepalese rupee(NPr)76,500/case],followed by contact tracing(NPr 90,286/case)and prison screening(NPr 298,300/case).House-to-house and contact tracing case paucibacillary/multibacillary(PB:MB)ratios were 59:41 and 68:32;female/male ratios 63:37 and 57:43;pediatric cases 11%in both approaches;and grade-2 disabilities(G2D)11%and 5%,*** leprosy was not signifcantly diferent among household and neighbor contacts[odds ratios(Or)=1.4,95%confdence interval(CI):0.24-5.85]and for contacts of MB versus PB cases(Or=0.7,95%CI 0.26-2.0).Attack rates were not signifcantly d

关键词： Leprosy Early case detection Community-based epidemiology Hidden case New case detection rate Attack rate Cost per case identifed Nepal

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VLF/LF Amplitude Perturbations before Tuscany Earthquakes, 2013

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Natural Science 2017年第12期9卷 437-456页

作者： Balaram Khadka Keshav Prasad Kandel Sudikshya Pant Karan Bhatta Basu Dev ghimire St. Xavier’s College Kathmandu Nepal Nepalese Center for research in Physical Sciences (NCrPS) Kathmandu Nepal

The US Navy VLF/LF Transmitter’s NSY signal (45.9 kHz) transmitted from Niscemi, Sicily, Italy, and received at the Kiel Long Wave Monitor, Germany, was analyzed for the period of two months, May and June (EQ-month) of 2013. There were 12 earthquakes of magnitude greater than 4 that hit Italy in these two months,?of which the earthquake of 21st June having magnitude of 5.2?and a shallow focal depth of 5 km was the major one. We studied the earthquake of 21st of June 2013, which struck Tuscany,?Central Italy, (44.1713°N and?10.2082°E) at 10:33 UT, and also analyzed the effects of this earthquake on the?sub-ionos-?pheric VLF/LF signals. In addition, we also studied another earthquake, of magnitude 4.9, which hit the same place at 14:40 UT on 30th of June and had shallow focal depth of 10 km. We assessed the data using terminator time (TT) method and night time fluctuation method and found unusual changes in VLF/LF amplitudes/phases. Analysis of trend, night time dispersion, and night time fluctuation was also carried and several anomalies were detected. Most ionospheric perturbations in these parameters were found in the month?of June, from few days to few weeks prior to the earthquakes. Moreover, we filtered the possible effects due to geomagnetic storms, auroras, and solar activities?using parameters like?Dst index, AE index, and Kp index for analyzing the geomagnetic effects,?and Bz (sigma) index, sunspot numbers, and solar index F10.7 for analyzing the solar activities for the confirmation of anomalies as precursors.

关键词： D-Layer VLF/LF Terminator Times SST SrT DLPT DLDT Night Time Fluctuation

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Study of Photoemission from BAs by Using Muffin-Tin Potential

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材料科学与工程（中英文A版） 2016年第3期6卷 181-184页

作者： rebecca Lalngaihawmi Benjamin Vanlalruata M. P. ghimire r. K. thapa A. H. reshak Condensed Matter Theory research Group Department of Physics Mizoram University 796004 lndia Condensed Matter Physics research Center Butwal Rupendehi Nepal IFW Dresden Helmholtz Strafle 20 01069 Dresden Germany New Technologies - research Centre University of West Bohemia Univerzitni 8 306 14 Pilsen Czech Republic Center of Excellence Geopolymer and Green Technology School of Material Engineering University MalaysiaPerlis 01007 Kangar Perlis Malaysia

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Surface Modification of the Biowaste for Purification of Wastewater Contaminated with Toxic Heavy Metals—Lead and Cadmium

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Advances in Chemical Engineering and Science 2013年第3期3卷 178-184页

作者： Bindra Shrestha Jagjit Kour Puspa Lal Homagai Megh raj Pokhrel Kedar Nath ghimire Central Department of Chemistry Tribhuvan University Kathmandu Nepal

The surface of a biowaste was modified by introduction of amino group for the purification of wastewater contaminated with heavy metals. In this study waste tea leaf was used as a biowaste which was an economic and efficient bioadsorbent. The aminated tea leaves were characterized by spectral and elemental analysis. The adsorption capacity of the surface modified biosorbent was studied as the function of solution pH, concentration of metal ions and contact time of adsorption. The applicability of Langmuir isotherm was tested. The adsorption capacities were found to be 83.04 mg/g and 57 mg/g for Pb (II) and Cd (II), respectively. The biosorbent was regenerated by desorption of the metal loaded adsorbent with 0.1 M HNO3. These results showed that the aminated tea leaves may be an attractive alternative for treatment of wastewater contaminated with heavy metals.

关键词： Bioadsorbent Heavy Metals Wastewater Amination Langmuir Isotherm

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