检索结果-南通市图书馆

User Perspective of Misplaced PPIUCD and Factors Resulting in PPIUCD Removal: Qualitative Pilot Study

Open Journal of Epidemiology 2024年第3期14卷 517-532页

作者： A. G. Radhika Rashmi gupta Pooja Kashyap Ravleen bakshi Department of Obstetrics and Gynecology University College of Medical Sciences & Guru Teg Bahadur Hospital Dilshad Garden Delhi India GTb Hospital Delhi India Indian Council of Medical Research Delhi India

Objective: The aim of the current study was to assess the impact of operative interventions for misplaced device among women who opted for PPIIUCD and the evaluation of reasons for PPIUCD removal within the follow up period of two years. Design: A descriptive exploratory study was conducted over three months among fourteen PPIUCD acceptors at a tertiary care health facility in Delhi, India. Face-to-face & telephonic in-depth interviews were conducted with a selected sample of PPIUCD acceptors who had later opted for its removal. Results: Participants (n = 14) aged 24 – 40 exhibited generally positive attitudes towards PPIUCDs indicating an indicate an understanding of the importance of PPIUCD in preventing unintended pregnancies. Menstrual disturbance and misplaced IUCD were major reasons for removal. despite their own experience necessitating the removal of IUCD, positive experience by other family members (mothers in law) in this study helped to keep the confidence on the contraceptive. Themes included (a) general experience of PPIUCD use (b) Health Facility accessed for removal of IUCD (c) Would she recommend it to others? (d) preferred contraceptive after removal of IUCD. Conclusion: Misplaced IUCD, missing thread, menstrual irregularities, and pain are all associated with PPIUCD and are important reasons for dissatisfaction. Appropriate, timely and supportive individualized care that address knowledge gaps, societal perceptions, and healthcare system challenges would certainly help in reducing dissatisfaction due to PPIUCD and thereby the removal rates.

关键词： Postpartum Intrauterine Device PPIUCD LARC Long Acting Reversible Contraception Postpartum Family Planning Contraception

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Network Log-based SSH brute-Force Attack Detection Model

引用

Computers, Materials & Continua 2021年第7期68卷 887-901页

作者： Jeonghoon Park Jinsu Kim b.b.gupta Namje Park Department of Convergence Information Security Graduate SchoolJeju National UniversityJeju63243Korea Department of Computer Engineering National Institute of Technology KurukshetraKurukshetra136119India

The rapid advancement of IT technology has enabled the quick discovery,sharing and collection of quality information,but has also increased cyberattacks at a fast pace at the same *** exists no means to block these cyberattacks completely,and all security policies need to consider the possibility of external ***,it is crucial to reduce external attacks through preventative *** general,since routers located in the upper part of a firewall can hardly be protected by security systems,they are exposed to numerous unblocked *** block unnecessary services and accept necessary ones while taking appropriate measures to reduce vulnerability,block unauthorized access,and generate relevant *** logs created through unauthorized access are caused by SSH brute-force attacks,and therefore IP data of the attack can be collected through the *** paper proposes a model to detect SSH brute-force attacks through their logs,collect their IP address,and control access from that IP *** this paper,we present a model that extracts and fragments the specific data required from the packets of collected routers in order to detect indiscriminate SSH input *** do so,the model multiplies a user’s access records in each packet by weights and adds them to the blacklist according to a final calculated result *** addition,the model can specify the internal IP of an attack attempt and defend against the first 29 destination IP addresses attempting the attack.

关键词： SSH brute-force attack ELK Stack IT infra log access control

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microalgal bioremediation of food-processing industrial wastewater under mixotrophic conditions： Kinetics and scaleup approach

引用

Frontiers of Chemical Science and Engineering 2016年第4期10卷 499-508页

作者： Suvidha gupta R. A. Pandey Sanjay b. Pawar Environmental biotechnology Division CSIR-Nafional Environmental Engineering Research Institute (NEERI) Nagpur 440020 India

The Chlorella microalgae were mixotrophically cultivated in an unsterilized and unfikered raw foodprocessing industrial wastewater. both inorganic carbon （CO2-air） and organic carbon （wastewater） were provided simultaneously for microalgae growth. The aim of the study is to find out the utilization rates of total organic carbon （TOC） and chemical oxygen demand （COD） under mixotrophic conditions for a given waste water. About 90% reduction in TOC and COD were obtained for all dilutions of wastewater. Over 60% of nitrate and 40% of phosphate were consumed by microalgae from concentrated raw wastewater. This study shows that microalgae can use both organic and inorganic sources of carbon in more or less quantity under mixotrophic conditions. The growth of microalgae in food-processing industrial wastewater with all studied dilution factors, viz. zero （raw）, 1.6 （dilution A）, and 5 （dilution b） suggests that the freshwater requirement could be reduced substantially （20%-60%）. The degradation kinetics also suggests that the microalgae cultivation on a high COD wastewater is feasible and scalable.

关键词： total organic carbon wastewater bioremedia-tion kinetics mixotrophic cultivation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preparation of thalidomide nano-flakes by supercritical antisolvent with enhanced mass transfer

引用

Particuology 2012年第1期10卷 17-23页

作者： HeyangJin Melinda Hemingway Ram b. gupta Fei Xia Yaping Zhao School of Chemistry and Chemical Engineering ShanghaiJiaotong University Shanghai China Department of Chemical Engineering Auburn University Auburn AL USA

Thalidomide treats multiple myeloma and protracts life-span of patient, but its bioavailability is limited as it is poorly water soluble. Thalidomide nano-flakes are produced to improve the drug dissolution rate. Two nanoflake production methods are utilized for a comparative study： a supercritical antisolvent （SAS） method and a supercritical antisolvent with enhanced mass transfer （SAS-EM）. SAS-EM utilizes ultrasonication to improve dispersion upon injection within the supercritical carbon dioxide. Comparative study of SAS and SAS-EM thalidomide confirmed that the application of ultrasonication improved the micro/nano particles produced by SAS. The effects of ultrasound power on the formation of thalidomide particles are examined. The particle size and morphology were characterized by SEM. The thalidomide nano-flakes produced by SAS-EM were smaller than the particles produced by SAS. Dissolution rates of the produced particles, evaluated by HPLC, demonstrated an increase in the thalidomide dissolution rate for the SAS-EM produced particles, The polymorphs and crystallinity of thalidomide particles （flakes） were observed by FTIR and XRD. In this research, the supercritical processing significantly modified the crystal formation of thalidomide from an original state of a β-polymorph to the amorphous state α-polymorph after suoercritical orocessing.

关键词： Supercritical Anti-solventUltrasound Thalidomide Nano-flakes Polymorph

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis,characterization and application of PVA/ionic liquid mixed matrix membranes for pervaporation dehydration of isopropanol

引用

Chinese Journal of Chemical Engineering 2017年第10期25卷 1402-1411页

作者： Ganesh b.Thorat Smita gupta Z.V.P.Murthy Department of Chemical Engineering Sardar Vallabhbhai National Institute of Technology Surat 395007 Gujarat India

In this study,polyvinyl alcohol(PVA)–ionic liquid(IL) membranes were prepared for the separation of isopropyl alcohol(IPA)–water azeotropic mixtures by ***-IL composite membranes were prepared by simple solvent evaporation method using four ILs,viz.,1-n-butyl-3-methylimidazolium chloride(bMIMCl),1-hexyl-3-methylimidazolium chloride(HMIMCl),1-hexyl-3-methylimidazolium tetra fluoroborate(HMIMbF4) and 1-octyl-3-methylimidazolium chloride(OMIMCl).Three ILs were used to study the effect of alkyl chain on the pervaporation *** study had focused on the effect feed water concentration from 10%–40%and effect of feed temperature from 50–80°*** properties of all the membranes were studied using Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM) and contact angle *** Arrhenius activation energies for permeation were estimated to be in the range 4–12 kJ·mol-1 from the temperature dependent permeation values.

关键词： Composite membranes Ionic liquids Dehydration Isopropanol Pervaporation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

beneficiation of coal using supercritical water and carbon dioxide extraction:sulfur removal

引用

International Journal of Coal Science & Technology 2021年第4期8卷 717-726页

作者： Matthew J.DeCuir Ram b.gupta bhima Sastri Department of Chemical and Life Science Engineering Virginia Commonwealth UniversityRichmondVA 23284-3068USA Office of Fossil Energy U.S.Department of Energy19901 Germantown RoadGermantownMD 20874-1290USA

This work explores the use of carbon dioxide,water,and their mixtures as solvent for the precombustion beneficiation of raw coal without using any toxic mineral acids in the temperature range of 200-400℃.The fluid polarity,ionic constant,and supercritical point can be adjusted by H_(2)O/CO_(2)ratio and *** carbon dioxide to hydrothermal fluid also increases the ionization by forming carbonic *** with supercritical fluids have several benefits including enhanced mass transport,ease of separation and recycle,wide range of extractive capability and tunability,better inherent safety,and in the case of carbon dioxide and water-low cost.A semi-continuous extraction system was designed and built in which pressure,temperature and the relative flow rates of CO_(2)and H_(2)O can be *** powder is kept in a packed bed and the extraction is carried out at 143 bar *** sulfur as a model heteroatom,extractive efficiency is examined as a function of the temperature,fluid composition,fluid flow,and extraction *** results indicate that carbon dioxide,water,and supercritical water-carbon dioxide(ScWC)all can effectively extract about 50%of total sulfur from bituminous coal in 1 *** above 350℃decreased effectiveness,and extraction above the supercritical point of pure water caused hydrothermal *** extraction may provide necessary control to prevent organic dissolution while removing sulfur.

关键词： Coal Supercritical Sulfur beneficiation Cleaning Extraction

来源：

维普期刊数据库

维普期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

铝合金上射频溅射二氧化钛涂层的微观结构、润湿性和耐腐蚀行为（英文）

引用

Journal of Central South University 2024年第07期 2210-2224页

作者： Rajeev VERMA Vijay KUMAR Saurabh KANGO Amindra KHILLA Rajeev gupta Department of Industrial and Production Engineering Dr B R Ambedkar National Institute of Technology Jalandhar Department of Mechanical Engineering Dr B R Ambedkar National Institute of Technology Jalandhar Department of Physics School of Engineering University of Petroleum & Energy Studies

在不同温度下，在Al6061合金表面射频溅射二氧化钛涂层，以改善其疏水性和耐腐蚀性，旨在了解射频溅射工艺对二氧化钛涂层性能的影响规律。使用表面轮廓仪和测角仪测量表面粗糙度和润湿性，通过化学沸腾法和盐雾腐蚀法过程中形貌变化来... 详细信息

在不同温度下，在Al6061合金表面射频溅射二氧化钛涂层，以改善其疏水性和耐腐蚀性，旨在了解射频溅射工艺对二氧化钛涂层性能的影响规律。使用表面轮廓仪和测角仪测量表面粗糙度和润湿性，通过化学沸腾法和盐雾腐蚀法过程中形貌变化来研究耐腐蚀性能。使用场发射扫描电子显微镜（FESEM）、能量色散光谱(EDS)和X射线衍射(XRD)技术来表征涂层。结果表明，与其他温度相比，在500℃得到的二氧化钛涂层具有最高的水接触角和优越的耐腐蚀性。表面表征证实了这种500℃得到的二氧化钛涂层由于其好的疏水性，有效地延缓了腐蚀，使其持久用于工业应用。

关键词：铝二氧化钛涂层射频溅射疏水性腐蚀

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

One man’s trash-another man’s treasure: fecal transplantation

引用

Hepatobiliary Surgery and Nutrition 2019年第6期8卷 623-625页

作者： Nancy gupta Stephen b.Hanauer Digestive Health Center University of Iowa Hospitals and ClinicsIowa CityIAUSA Digestive Health Center Northwestern University Feinberg School of MedicineChicagoILUSA

Discovery of immune checkpoint inhibitors has revolutionized the field of *** checkpoints play a key role in maintaining immune homeostasis and preventing *** normal situation,immune responses are regulated by a balance between co-stimulatory and inhibitory signals referred to as"immune checkpoints".Activated T cells express multiple co-inhibitory receptors such as lymphocyte-activation gene 3(LAG-3),programmed cell death protein 1(PD-1)and cytotoxic T-lymphocyte-associated protein 4(CTLA-4)that are primary mediators of immune effector responses to self-proteins,chronic infections and tumor *** tumors these immune checkpoints allow the tumor cells to dodge anti-tumor response(1).Checkpoint inhibitors(CPI)block these immune checkpoints allowing the immune system to attack tumor cells(2).Although the immune system has the inherent ability to distinguish self from non-self and thus typically mount an attack on the non-self-cancer cells;over-activation of the immune response can lead to serious adverse events collectively called immune-related adverse events(irAEs)(3).While activation of the immune system and development of irAEs has been associated with better outcomes for underlying cancer(4),the associated side effects increase morbidity and mortality in addition to having a negative impact on patient’s quality of *** associated with CPI therapy can have delayed manifestation and present after the CPI have been discontinued(5).

关键词： homeostasis mortality collective

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Multi-Conditional Proxy broadcast Re-Encryption Scheme for Sensor Networks

引用

Computers, Materials & Continua 2020年第12期65卷 2079-2090页

作者： Pang Li Lifeng Zhu brij b.gupta Sunil Kumar Jha Nanjing Vocational College of Information Technology Nanjing210044China State Key Laboratory of bioelectronics Jiangsu Key Laboratory of Remote Measurement and ControlSchool of Instrument Science and EngineeringSoutheast UniversityNanjing210096China Department of Computer Engineering National Institute of TechnologyKurukshetra136119India Department of Computer Science and Information Engineering Asia UniversityTaichung41449Taiwan IT Fundamentals and Education Technologies Applications University of Information Technology and Management in RzeszowRzeszow Voivodeship100031Poland

In sensor networks,it is a challenge to ensure the security of data exchange between packet switching nodes holding different private *** order to solve this problem,the present study proposes a scheme called multi-conditional proxy broadcast re-encryption(MC-PbRE).The scheme consists of the following roles:the source node,proxy server,and the target *** the condition is met,the proxy can convert the encrypted data of the source node into data that the target node can directly *** allows the proxy server to convert the ciphertext of the source node to a new ciphertext of the target node in a different group,while the proxy server does not need to store the key or reveal the *** the same time,the proxy server cannot obtain any valuable information in the *** paper formalizes the concept of MC-PbRE and its security model,and proposes a MC-PbRE scheme of ciphertext ***,the scheme security has been proved in the random oracle.

关键词： Proxy re-encryption sensor network security broadcast re-encryption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High-dose infliximab for treatment of pediatric ulcerative colitis:A survey of clinical practice

引用

World Journal of Gastroenterology 2012年第11期18卷 1229-1234页

作者： Roy Nattiv Janet M Wojcicki Elizabeth A Garnett Neera gupta Melvin b Heyman Department of Pediatrics UCSF Benioff Children's HospitalUniversity of CaliforniaSan FranciscoCA 94143-0136United States

AIM:To assess attitudes and trends regarding the use of high-dose infliximab among pediatric gastroenterologists for treatment of pediatric ulcerative colitis(UC).METHODS:A 19-item survey was distributed to subscribers of the pediatric gastroenterology(PEDSGI) *** were submitted anonymously and results compiled in a secure ***:A total of 113 subscribers(88% based in the United States) responded(101 pediatric gastroenterology attendings and 12 pediatric gastroenterology fellows).There were 46% in academic medical institutions and 39% in hospital-based *** majority(91%) were treating >10 patients with UC;13% were treating >100 patients with UC;91% had prescribed infliximab(IFX) 5 mg/kg for UC;72% had prescribed IFX 10 mg/kg for *** a 5-point Likert scale,factors that influenced the decision not to increase IFX dosing in patients with UC included:"improvement on initial dose of IFX"(mean:3.88) and "decision to move to colectomy"(3.69).Lowest mean Likert scores were:"lack of guidelines or literature regarding increased IFX dosing"(1.96) and "insurance authorization or other insurance issues"(2.34)."Insurance authorization or other insurance issues" was identified by 39% as at least somewhat of a factor(Likert score ≥ 3) in their decision not to increase the IFX *** 10 mg/kg was more commonly used for the treatment of pediatric UC among responders based in the United States(75/100) compared to non-United States responders(6/13,P = 0.047).Induction of remission was reported by 78% of all responders and 81% reported maintenance of remission with IFX 10 mg/*** responder reported one death with IFX 10 mg/***:IFX 10 mg/kg is more commonly used in the United States to treat pediatric *** and safety data are required to avoid insurance barriers for its use.

关键词： Immunosuppression Inflammatory boweldisease Ulcerative colitis Children Pharmacology

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：