检索结果-南通市图书馆

Geochemistry and petrogenetic evolution of metasedimentary rocks in Bunu Area,part of Kabba-Lokoja-Igarra schist belt,SW Nigeria

引用

Acta Geochimica 2022年第5期41卷 765-788页

作者： M.S.Kolawole e.c.chukwu A.N.Agibe Department of Geology Federal UniversityOye-EkitiEkiti StateNigeria

Field and geochemical studies of the Bunu area,SW Nigeria,were carried out on gneiss-metasedimentary rocks that consist of migmatised gneiss,quartz-mica schist,and foliated and massive *** gneissmetasedimentary rocks are interbedded with meta-igneous rock(amphibolite),all of which are intruded by granitoid and cut by basic and felsic *** data on major,trace,and rare earth elements of these rocks from the area were used to speculate on the petrogenetic and geodynamic evolution of the rocks in the ***,the metasedimentary rocks in the area have a restricted range of major oxides such as SiO_(2)and Al_(2)O_(3)with low average values of FeO,MnO,caO,and *** of average values of HSFe such as Zr,Nb,and Y are moderately high in migmatitic gneiss,quartzmica schist,and low in both massive and foliated quartzite.ΣLRee average values are 124.25,132.41,and18.64 ppm respectively for migmatite gneiss,quartz-mica schist,and low in both massive and foliated *** rocks are also generally enriched in Ba,cs,Pb,U,cr,Rb,and Zr and depleted in Be,Sr,Ti,Mo,Th,and *** enrichment–depletion in major oxides and trace elements of the rocks in this area is probably a consequence of the movement of metamorphic remobilized fluids within the rocks in the area during the Pan-African or earlier events as noted in the adjacent egbe-Isanlu Schist belt.A further geochemical characterisation of the rocks in the area using Log(Na_(2)O/KO)vs Log(SiO_(2)/Al_(2)O_(3)indicates that while the protolith of migmatised gneiss and quartzmica schist are greywackes to litharenite in compositions that of quartzites are sublitharenite to quartz *** the ternary plot of Al_(2)O_(3)-(caO+Na_(2)O)-KO for metasedimentary rocks in the area,most migmatitic gneiss and quartz-mica schist rocks plot close to average shale while quartzites mostly tend to illite compositions and almost toward the Al_(2)O_(3)-apex of the diagram attesting to depletion of

关键词： Geochemical studies Metasedimentary rocks Geodynamic activities Protolith Passive continental margins

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

Status and prospects for symmetric organic redox flow batteries

引用

Journal of energy chemistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam Dyker Department of chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

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

Acquired sensorineural hearing loss,oxidative stress,and microRNAs

引用

Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： Desmond A.Nunez Ru c.Guo Division of Otolaryngology–Head&Neck Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada Division of Otolaryngology–Head&Neck Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** eMBASe,Ovid MeDLINe,Web of Science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for english language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-english language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target Sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(SIRT1/P Gc-1α),SIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural

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

Multiple sclerosis is at a checkpoint: advancing the program

引用

Neural Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon c.Smith Jessica L.Williams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biological Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Multiple sclerosis(MS) is a chronic inflammatory and demyelinating disease of the central nervous system(cNS). Patients with MS experience sensory and motor function loss due to myelin and/or axon damage perpetuated b... 详细信息

关键词： Hauser sclerosis damage

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

Listeriosis Knowledge and Attitude among Pregnant Women Attending a Tertiary Health Institution, South Western Nigeria

引用

Advances in Infectious Diseases 2020年第2期10卷 64-75页

作者： emelda e. chukwu Francisca O. Nwaokorie center for Infectious Disease Research Microbiology Department of the Nigerian Institute of Medical Research Yaba Nigeria Department of Medical Laboratory Sciences College of Medicine University of Lagos Lagos Nigeria

Background: Listeriosis affects immunosuppressed individual’s especially pregnant women. Maternal infections are usually mild for the woman, but may have devastating effects on the unborn child, including miscarriage, stillbirth, preterm labour and serious neonatal illness. WHO recommends that pregnant women should be educated to avoid foods with high risk of contamination. This study seeks to evaluate knowledge and practices predisposing to listeria infections during pregnancy. Methodology: This is a cross-sectional study on pregnant women, attending the antenatal clinic of Lagos University Teaching Hospital (LUTH) using semi structured questionnaires. The knowledge score of participants was collated and analyzed using SPSS version 26. Results: The mean age of the participants was 32.07 ± 5.6 years. Forty-three (30.7%) women have had previous miscarriages with the mean no of miscarriage of 1.54. Out of 147 participants, only 20 (13.6%) admitted having heard of listeriosis while 127 (86.4%) had never heard of listeriosis and none of the participants has ever been tested for listeriosis. The Overall knowledge score was poor, and this was irrespective of age and duration of pregnancy. However, women with graduate and/or postgraduate degrees were more likely to have heard of Listeriosis (X2 = 10.88, P = 0.028). conclusion: Our study shows a low level of knowledge about this food-borne illness, which can lead to severe illnesses in pregnant women and their unborn child. It is necessarily to educate pregnant women on the risk of listeriosis. This would be a key factor in creating and implementing accurate measures of prevention and control.

关键词： Listeriosis Listeria monocytogenes Pregnant Women Fetal Death Nigeria

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

Geochemical characterization of Mineralized Pegmatites around Wowyen Areas,Akwanga,Northcentral Nigeria

引用

Advances in Geological and Geotechnical engineering Research 2022年第1期4卷 37-48页

作者： Anthony chukwu Department of Geology Ebonyi State UniversityAbabkalikiNigeria

This study aims to account for the petrogenesis and mineralization of pegmatites around the Wowyen area,northcentral basement complex,*** studies,petrography and whole rock geochemistry(Major oxides were estimated by X-Ray Fluorescence while the trace elements were estimated by Inductively coupled Plasma Mass Spectrometry)where the methods *** pegmatites around Wowyen area are emplaced in the remobilized belt of the Nigerian Basement *** are predominantly complex pegmatites(rare-metal pegmatites)which are intruded in the biotite-muscovite gneiss while the simple pegmatites intruded more in the migmatitic banded *** major components of the complex pegmatites are quartz,albite and muscovite and *** accessory constituents are garnet;ilmenites;cassiterite-columbite-tantalite oxides in contrast to quartz,microcline and biotite of the simple *** complex pegmatites show higher peraluminous than the simple pegmatites,however,higher fractionation is observed in the complex pegmatites than the simple *** complex pegmatites are rather enriched in rare elements such as Li,Rb,B,cs,Sn,Nb,Be and Ta and show low ratios in Al/Ga and K/Rb than the simple *** pegmatites are likely product of sedimentary origin and originated from post-collisional tectonic event.

关键词： Rare-metal pegamatites Geochemistry Basement complex Pan-African events Wowyen

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

Influence of storage life and variety on the micro-nutrient compositions of stored cocoyam-based products

引用

Food Therapy and Health care 2022年第2期4卷 10-21页

作者： NP David-chukwu AG Amadi Ic Onuabuchi MN chukwu Department of Hospitality Management and Tourism Abia State PolytechnicAbaNigeria Department of Food Technology Abia State PolytechnicAbaAbia StateNigeria.

The micronutrient compositions of stored cocoyam-based products were determined using gas chromatography and atomic absorption *** dried cormels and dried cocoyam leaves were pulverized with a locally fabricated machine and stored in various plastic containers for 0,1,2,3 *** data obtained were analyzed statistically using SPSS version *** were separated at P≤0.05 using Fisher’s Least Significant *** vitamin contents(mg/100g)of achicha were as follows:cocoindia had total carotene(1.84),B1(0.071),B2(0.044),B3(0.41),c(4.14)while edeofe had vitamin e(0.84)and total carotene(1.24),B1(0.021),B2(0.013),B3(0.18),c(2.47)and e(0.57)after *** vitamin contents(mg/100g)of mpoto were as follows:cocoindia had B1(0.53),B2(0.31),B3(1.75),c(18.46)and e(5.28)while edeofe had total carotene(3.44μg/100g)and B1(0.26),B2(0.14),B3(1.19),c(8.61)and e(2.46),and anampu had total carotene(2.56μg/100g)after *** mineral composition(mg/100g)of achicha are as follows:anampu had ca(48.78),Na(18.52),Mg(10.18),Mn(0.17)and P(19.61),Fe(2.47),Zn(2.60),I2(51.71);edeofe had P(26.27),Fe(3.66),Zn(2.91),and ca(40.53),Na(10.67),Mg(6.29),K(285.77),Mn(0.075);and cocoindia had K(405.87)and I2(69.34)after *** mineral compositions of mpoto(mg/100g)are as follows:anampu had ca(157.57),Mg(95.84),K(485.52),P(45.52),I2(90.33)and Zn(2.61);edeofe had Fe(4.87),Zn(4.52),and ca(152.29),Na(176.54),Mg(84.77),K(325.87),P(35.53),Mn(0.25),I2(65.29)and cocoindia had Mg(95.84),Mn(0.63)and Fe(3.61)after *** of the products reduced significantly(P≤0.05)during *** colocasia products with micronutrients will meet the required recommended dietary intake.

关键词： achicha mpoto corm cormel edeofe cocoindia minerals vitamins

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

enhancing perianal disease management with integrated physical and psychological approaches

引用

World Journal of clinical cases 2025年第2期13卷 59-63页

作者： Uchenna e Okpete Haewon Byeon Department of Digital Anti-aging Healthcare(BK21) Inje UniversityGimhae 50834South Korea

This article provides a comprehensive analysis of the study by Hou et al,focusing on the complex interplay between psychological and physical factors in the postoperative recovery(POR)of patients with perianal *** study sheds light on how illness perception,anxiety,and depression significantly influence recovery *** et al developed a predictive model that demonstrated high accuracy in identifying patients at risk of poor *** article explores the critical role of pre-operative psychological assessment,highlighting the need for mental health support and personalized recovery plans in enhancing POR quality.A multidisciplinary approach,integrating mental health professionals with surgeons,anesthesiologists,and other specialists,is emphasized to ensure comprehensive care for *** study’s findings serve as a call to integrate psychological care into surgical practice to optimize outcomes for patients with perianal diseases.

关键词： Perianal disease Post-operative recovery Anxiety Depression Pain management emotional well-being Multidisciplinary approach

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

Brain-derived neurotrophic factor alterations and cognitive decline in schizophrenia:Implications for early intervention

引用

World Journal of Psychiatry 2025年第1期15卷 189-193页

作者： Uchenna e Okpete Haewon Byeon Department of Digital Anti-aging Healthcare(BK21) Inje UniversityGimhae 50834South Korea

This manuscript explores the recent study by cui et al which assessed the interplay between inflammatory cytokines and brain-derived neurotrophic factor(BDNF)levels in first-episode schizophrenia *** study revealed that higher levels of interleukin-6 and tumor necrosis factor-αcorrelated with reduced BDNF levels and poorer cognitive *** is a severe psy-chiatric disorder impacting approximately 1%of the global population,charac-terized by positive symptoms(hallucinations and delusions),negative symptoms(diminished motivation and cognitive impairments)and disorganized thoughts and *** research highlights the role of BDNF as a potential biomarker for early diagnosis and therapeutic *** findings from cui et al’s study suggest that targeting neuroinflammation and enhancing BDNF levels may improve cognitive *** treatment approaches involve a com-bination of pharmacological and non-pharmacological interventions tailored to individual patient ***,monitoring cognitive and neuroinflammatory markers is essential for improving patient outcomes and quality of ***-quently,this manuscript highlights the need for an integrated approach to schizo-phrenia management,considering both clinical symptoms and underlying neuro-biological changes.

关键词： Schizophrenia cognitive impairment Neuroinflammatory markers Brain-derived neurotrophic factor Interleukin Personalized treatment

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

Dynamics of air transport networks：A review from a complex systems perspective

引用

chinese Journal of Aeronautics 2017年第2期30卷 469-478页

作者： Luis e.c.Rocha Department of Public Health Sciences Karolinska Institutet Stockholm 17177 Sweden Department of Mathematics University of Namur 5000 Belgium

Air transport systems are highly dynamic at temporal scales from minutes to *** dynamic behavior not only characterizes the evolution of the system but also affect the system＇s *** the evolutionary mechanisms is thus fundamental in order to better design optimal air transport networks that benefits companies,passengers and the *** this review,we briefly present and discuss the state-of-the-art on time-evolving air transport *** distinguish the structural analysis of sequences of network snapshots,ideal for long-term network evolution（*** evolution）,and temporal paths,preferred for short-term dynamics（*** evolution）.We emphasize that most previous research focused on the first modeling approach（***-term） whereas only a few studies look at high-resolution temporal *** conclude the review highlighting that much research remains to be done,both to apply already available methods and to develop new measures for temporal paths on air transport *** particular,we identify that the study of delays,network resilience and optimization of resources（aircraft and crew） are critical topics.

关键词： Air transport Airport network complex network Dynamic network Temporal network

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

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：