检索结果-南通市图书馆

The Effect of Uncaria gambir on Optical Properties and Thermal Stability of CNF/PVA Biocomposite Films

Journal of Renewable Materials 2024年第9期12卷 1593-1603页

作者： Remon Lapisa Anna Niska Fauza Dieter Rahmadiawan Krismadinata Dori Yuvenda Randi Purnama Putra Waskito Nandy Putra Hairul Abral Mechanical Engineering Department Universitas Negeri PadangPadang25173Indonesia Centre for Energy and Power Electronics Research Universitas Negeri PadangPadang25173Indonesia Department of Mechanical Engineering National Cheng Kung University(NCKU)Tainan70101Taiwan Mechanical Engineering Department Universitas IndonesiaDepok16424Indonesia Mechanical Engineering Department Universitas AndalasPadang25163Indonesia

Cellulose-based film has gained popularity as an alternative to synthetic polymers due to its outstanding *** all types of cellulose materials available,cellulose nanofiber(CNF)has great potential to be utilized in a diverse range of applications,including as a film *** this study,CNF biocomposite film was prepared by using polyvinyl alcohol(PVA)as a matrix and Uncaria gambir extract as a *** study aims to investigate the effect of Uncaria gambir extract on the optical properties and thermal stability of the produced *** formation of the CNF biocomposite films was confirmed using Fourier Transform Infrared Spectroscopy,their transmittance characteristics were measured using UV-Vis spectroscopy and a transmittance meter,while their reflectance was determined using a reflectance *** results revealed that the addition of Uncaria gambir extract to the CNF biocomposite film improved its UV-shielding properties,as indicated by the lower percentage of transmittance in the visible region,10%–70%.In addition,its reflectance increased to 10.6%compared to the CNF film without the addition of Uncaria gambir ***,the thermal stability of the CNF biocomposite film with the addition of Uncaria gambir extract improved to around 400℃–500℃.In conclusion,the results showed that CNF biocomposite film prepared by adding Uncaria gambir extract can be a promising candidate for optical and thermal management materials.

关键词： Cellulose nanofiber biocomposite film optical properties Uncaria gambir thermal stability

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

Pair of dyon production near magnetized dyonic Reissner-Nordstrom black holes

引用

Chinese Physics C 2024年第5期48卷 257-271页

作者： Haryanto M.Siahaan Jurusan Fisika Universitas Katolik ParahyanganJalan Ciumbuleuit 94Bandung 40141Indonesia

We investigate the phenomenon of pair production of massive scalar particles with magnetic charge near the horizon of a magnetized dyonic Reissner-Nordstrom black *** intrinsic symmetry between the electric and magnetic quantities in the Einstein-Maxwell equations suggests that the pair can be generated through Hawking radiation and the Schwinger effect,provided that the Dirac quantization condition is satisfied.

关键词： Dyon pair production black hole

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

Braneworld black holes with ModMax electrodynamics on the brane

引用

Communications in Theoretical Physics 2024年第6期76卷 120-128页

作者： Haryanto M Siahaan Jurusan Fisika Universitas Katolik ParahyanganJalan Ciumbuleuit 94Bandung 40141Indonesia

In this study,we investigate ModMax electrodynamics localized within the Randall-Sundrum Ⅱ and Dvali-Gabadadze-Porrati branes,deriving corresponding 3-brane spacetime solutions that conform to the effective Einstein equations in each specific *** construct solutions for charged black holes within the effective Einstein equation framework in both braneworld *** examination explores the trajectories of charged objects in this spacetime,underscoring the significance of the nonlinear *** analysis uncovers the fact that,similar to the prior ModMax black hole investigation,the nonlinear parameter plays a pivotal role in suppressing the effective charge of the black hole,due to its definite positive value.

关键词： RS-II DGP ModMax brane

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

Implementing and evaluating an automatic centroid moment tensor procedure for the Indonesia region and surrounding areas

引用

Earth and Planetary Physics 2024年第4期8卷 609-620页

作者： Madlazim Muhammad Nurul Fahmi Dyah Permata Sari Ella Meilianda Sorja Koesuma Physics Department Faculty of Mathematics and Natural SciencesUniversitas Negeri SurabayaSurabaya 60231Indonesia Science Education Study Program Faculty of Mathematics and Natural SciencesUniversitas Negeri Surabaya 60231SurabayaIndonesia Disaster Science Department Faculty of Mathematics and Natural SciencesUniversitas Syiah KualaAceh 23126Indonesia Physics Department Faculty of Mathematics and Natural SciencesUniversitas Sebelas MaretSolo 57126Indonesia

The purpose of this research was to suggest an applicable procedure for computing the centroid moment tensor(CMT)automatically and in real time from earthquakes that occur in Indonesia and the surrounding *** software was used to estimate the CMT solution by selecting the velocity model that best suited the local and regional geological conditions in Indonesia and the surrounding *** data used in this study were earthquakes with magnitudes of 5.4 to ***-quality,real-time broadband seismographic data were provided by the International Federation of Digital Seismograph Networks Web Services(FDSNWS)and the European Integrated Data Archive(EIDA)Federation in Indonesia and the surrounding ***,the inversion process and filter adjustment were carried out on the seismographic data to obtain good CMT *** CMT solutions from Gisola provided good-quality solutions,in which all earthquake data had A-level quality(high quality,with good variant reduction).The Gisola CMT solution was justified with the Global CMT(GCMT)solution by using the Kagan angle value,with an average of approximately 11.2°.This result suggested that the CMT solution generated from Gisola was trustworthy and *** Gisola CMT solution was typically available within approximately 15 minutes after an earthquake *** it met the quality requirement,it was automatically published on the *** catalog of local and regional earthquake records obtained through this technology holds great promise for improving the current understanding of regional seismic activity and ongoing tectonic *** accurate and real-time CMT solution generated by implementing the Gisola algorithm consisted of moment tensors and moment magnitudes,which provided invaluable insights into earthquakes occurring in Indonesia and the surrounding areas.

关键词： centroid moment tensor Gisola International Federation of Digital Seismograph Networks Web Services(FDSNWS) real time Indonesia

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

Exploring hematopoietic stem cell population in human milk and its benefits for infants:A scoping review

引用

Asian pacific Journal of Reproduction 2024年第3期13卷 107-114,I0001-I0006页

作者： Ghaniyyatul Khudri Dewi Sukmawati Department of Histology Faculty of MedicineUniversitas BaiturrahmahPadangIndonesia Department of Histology Faculty of MedicineUniversitas IndonesiaJakartaIndonesia

Objective:To comprehensively explore hematopoietic stem cells(HSCs)in human milk,understanding their molecular markers,isolation methods,benefits for infants,and potential medical ***:We conducted a scoping literature review following the PRISMA-ScR *** review included studies investigating HSCs in human milk,utilizing molecular markers such as CD34^(+),CD113^(+),and CD117^(+)for *** in vitro and in vivo studies exploring the morphology,function,and clinical implications of these cells were *** diverse range of papers reviewed were indexed in PubMed,Science Direct,Scopus,Sage Journals,and Google Scholar,published between 2010 and ***:This scoping review explored 577 articles and selected 13 studies based on our inclusion criteria,focusing on HSCs in human *** studies dilute samples prior to HSC isolation,followed by detection using markers such as CD34^(+),CD113^(+),and CD117^(+),with flow cytometry serving as the primary analysis tool,focusing on their isolation and detection *** no definitive benefits have been conclusively established,there is a strong belief in the potential of HSCs to positively impact infant immunity,growth,and tissue ***:This review presents significant evidence supporting the presence of HSCs in human milk,identified by markers such as CD34^(+),CD113^(+),and CD117^(+).These cells show considerable potential in enhancing infant health,including immunity,tissue repair,cognitive development,and gastrointestinal *** methodological variations in isolation and detection techniques,the collective findings underscore the potential clinical relevance of HSCs in human ***,this review highlights the noninvasive accessibility of human milk as a source of HSCs and emphasizes the need for further research to unlock their therapeutic potential.

关键词： CD34^(+) Cellular components Hematopoietic stem cells Human milk Stem cells

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

Inflammatory bowel disease(ulcerative colitis type)severity shows inverse correlation with semen parameters and testosterone levels

引用

Asian Journal of Andrology 2024年第2期26卷 155-159页

作者： Darmadi Darmadi Cennikon Pakpahan Rajender Singh Ankur Saharan Wanly Syahrizal Pasaribu Hermansyah Hermansyah Andri Rezano Department of Internal Medicine Faculty of MedicineUniversitas Sumatera UtaraMedan 20155Indonesia Andrology Study Program Faculty of MedicineUniversitas AirlanggaSurabaya 60132Indonesia Department of Biomedical Sciences Faculty of MedicineUniversitas AirlanggaSurabaya 60132Indonesia Division of Endocrinology Central Drug Research InstituteLucknowUtar Pradesh 226031India Amity University LucknowUttar Pradesh 226010India Department of Biomedical Sciences Faculty of MedicineUniversitas PadjadjaranSumedang 45363Indonesia

Individuals with inflammatory bowel disease(IBD)have been reported to be at an increased risk of infertility and sexual *** the relationship between them remains unclear,IBD severity is suspected to affect hormone levels and *** analyze the impact of IBD severity on semen parameters and sex hormone levels in ulcerative colitis-type IBD(UC-IBD),we conducted a cross-sectional study involving 120 patients with UC-IBD in Adam Malik General Hospital,Medan,*** patients were classified into three groups based on the Mayo score for Uc,followed by a comparison of various semen and hormone parameters among these *** addition to the cross-sectional analysis,a simple correlation test was conducted irrespective of the patient *** concentration,motility,and morphology were found to decline significantly with an increase in IBD *** classifying patients with IBD into subgroups,the Mayo score showed negative correlations with sperm concentration(r=-0.375,P<0.0001),rapid progressive motility(r=-0.660,P<0.0001),free testosterone(r=-0.732,P<0.0001),and total testosterone(r=-0.721,P<0.0001),and positivecorrelations with immotile sperm(r=0.660,P<0.0001),abnormal morphology(r=0.657,P<0.0001),and sex hormone-binding globulin(SHBG;r=0.278,P=0.002).Sperm concentration,motility,and morphology declined significantly with the severity of *** study suggests a significant negative impact of IBD severityonsemenqualityand sexhormones.

关键词： inflammatory bowel disease reproductive health sexual health sperm parameter testosterone

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

Dual Fuzzy-Sugeno Method to Enhance Power Quality Performance using a Single-phase Dual UPQC-Dual PV Without DC-Link Capacitor

引用

Protection and Control of Modern Power Systems 2024年第1期9卷 133-153页

作者： Amirullah Amirullah Adiananda Adiananda Depantment of Electrical Engineering Universitas Bhayangkara SuabayaSurabaya60231Indonesia University of Bhayangkara Surabaya

Unified power quality conditioner(UPQC)is a power electronics device consisting of a series active filter(Se AF)and a shunt active filter(Sh-AF)connected in parallel through a DC-link circuit to overcome power quality problems,ie.,voltage sag,voltage swell,and non-linear(NL)*** weakuess of the UPQC is that it cannot function normally if the Se AF and/or Sb-AF fail,and the devices are uable to transfer active power to the load in the event of an interrupt voltage at the *** paper proposes a novel configuration of a dual UPQC supplied by a dual photovoltaic PV),hereinafter referred to as 2UPQC2PV,to improve the power quality performance of a single-pbase 220 V/50 Hz distribution *** 2UPQC 2PV configuration is proposed to anticipate the possible failure of both inverters in one of the UPQC *** PV array replaces the DC-link capacitor to maintain its voltage counected to the DC-link of the UPQC constant while at the same time supplying active power to the load *** interruption *** dual-fuzzy Sugeno(dualFS)method is used to overcome the weakuess of the dual-proportioual-integral(dual-PD)control in determining the optimum paramneters of proportional and integral *** are three disturbances simulated in each-of 2UPQC-2PV and 1UPQC-1PV using dual-FS and dualPI,i.e,Case(S Sag-NL),Case 2(S-Swell-NL),and Case 3(S-Inter-NL).Each UPQC-PV combination using FS control is compared with PI control resulting in a total of sir *** 2UPQC-2PV configuration with dual-PI and dual-FS controls,in the three fault cases,is able to produce higher voltage changes than the 1UPQC 1PV *** the 2UPQC-2PV configuration in the three fault cases,Dual-FS control is able to produce lower THDs of load voltage and source current,than the dual-PI control,while meetings the limits of IEEE 519 *** Case 3,the configuration of 2UPQC-2PV using the dual-FS method,is capable of delivering the active power of the load close to that in

关键词： UPQC inverter Dual

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

Mitigating Carbon Emissions:A Comprehensive Analysis of Transitioning to Hydrogen-Powered Plants in Japan’s Energy Landscape Post-Fukushima

引用

Energy Engineering 2024年第5期121卷 1143-1159页

作者： Nugroho Agung Pambudi Andrew Chapman Alfan Sarifudin Desita Kamila Ulfa Iksan Riva Nanda Department of Mechanical Engineering Education Universitas Sebelas MaretSukoharjo57161Indonesia International Institute for Carbon-Neutral Reserch(WPI-I2CNER) Kyushu UniversityFukuoka819-0395Japan Postgraduate of Mechanical Engineering Universitas Sebelas MaretSurakarta57126Indonesia Energy and Society Laboratory Department of Mechanical Engineering EducationUniversitas Sebelas MaretSukoharjo57161Indonesia Department of Metallurgical and Material Engineering Universitas IndonesiaDepok16424Indonesia

One of the impacts of the Fukushima disaster was the shutdown of all nuclear power plants in Japan,reaching zero production in *** response,the country started importing more fossil energy including coal,oil,and natural gas to fill the energy ***,this led to a significant increase in carbon emissions,hindering the efforts to reduce its carbon *** the current situation,Japan is actively working to balance its energy requirements with environmental considerations,including the utilization of hydrogen ***,this paper aims to explore the feasibility and implications of using hydrogen power plants as a means to reduce emissions,and this analysis will be conducted using the energy modeling of the MARKAL-TIMES Japan *** hydrogen scenario(HS)is assumed with the extensive integration of hydrogen into the power generation sector,supported by a hydrogen import ***,this scenario will be compared with the Business as Usual(BAU)*** results showed that the generation capacities of the BAU and HS scenarios have significantly different primary energy *** BAU scenario is highly dependent on fossil fuels,while the HS scenario integrates hydrogen contribution along with an increase in renewable energy,reaching a peak contribution of 2,160 PJ in *** the HS scenario,the target of reducing CO_(2) emissions by 80%is achieved through significant hydrogen *** 2050,the total CO_(2) emissions are estimated to be 939 million tons for the BAU scenario and 261 million tons for the Hydrogen *** addition,the contribution of hydrogen to electricity generation is expected to be 153 TWh,smaller than PV and wind power.

关键词： Business as usual(BAU)scenario hydrogen scenario CO_(2)emissions power generation sector

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

Tumor necrosis factor-alpha, transforming growth factor-beta, degree of lower urinary tract symptoms as predictors of erectile dysfunction in benign prostatic hyperplasia patients

引用

Asian Journal of Urology 2024年第2期11卷 280-285页

作者： Gede W.K.Duarsa Yeremia G.Kusumah Ronald Sugianto Pande M.W.Tirtayasa Tjokorda G.B.Mahadewa Department of Urology Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia Department of General Surgery Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia Medical Doctor Study Program Faculty of MedicineUniversitas UdayanaBaliIndonesia Department of Urology Faculty of MedicineUniversitas UdayanaUniversitas Udayana Teaching HospitalBaliIndonesia Department of Neurosurgery Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia

Objective: Erectile dysfunction (ED) is a condition of insufficient penile erection, consistently or recurrently, for sexual activity. Tumor necrosis factor-alpha (TNF-α) induces transforming growth factor-beta (TGF-β), which causes the transition of epithelial cells into mesenchymal cells that affect ED. This study aimed to evaluate the roles of TNF-α, TGF-β, degree of lower urinary tract symptoms, and prostatic volume for the presence of ED in benign prostatic hyperplasia (BPH) ***: Our study performed an analytic observational retrospective cohort study using secondary data from four hospitals in Bali, Indonesia, including medical records and other administrative data. The sample was BPH patients with several history ***: Our sample was 83 respondents, ranging from 50 years to 80 years, 61 respondents with ED and 22 with non-ED. The International Prostate Symptom Score showed a significant result, which indicates that ED is more common in patients with higher International Prostate Symptom Score (p=0.002). Moreover, the TNF-α of ≥43.9 pg/mg and TGF-β of ≥175.8 pg/mL were significantly associated with the presence of ED in BPH patients (p<0.0001). Despite these results, prostate volume is not significant with ED (p=0.947).Conclusion: TNF-α, TGF-β, and lower urinary tract symptoms severity can predict the occurrence of ED in BPH, while prostatic volume was not significant.

关键词： Prostate enlargement Biomarker Erectiledysfunction Riskfactor

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

Petrology,geochemistry,and crystal size distribution of the basaltic andesite-dacite association at ***,Central Java,Indonesia:Insights to magma reservoir dynamics and petrogenesis

引用

Acta Geochimica 2024年第5期43卷 838-855页

作者： Indranova Suhendro Endra Yuliawan Revina Fitri Zen Zulfa Yogi Rahmawati Pandu Eka Priyana Sonna Diwijaya Muhammad Alsamtu Tita Sabila Pratama Suhartono Andre Jonathan Gammanda Adhny El Zamzamy Latief Department of Environmental Geography Faculty of GeographyUniversitas Gadjah MadaSekip Utara Jl.KaliurangBulaksumurYogyakarta 55281Indonesia Centre for Disaster Studies Universitas Gadjah MadaJl.Mahoni C-16BulaksumurYogyakarta 55281Indonesia

Ten rock samples consisting of one pyroclastic density current(PDC1)deposit,seven lava flows(LF1–7),and two summit lava domes(LD1,2)were studied to understand the petrogenesis and magma dynamics at *** stratigraphy is arranged as LF1,PDC1,LF2,LF3,LF4,LF5,LF6,LF7,LD1,and LD2;furthermore,these rocks were divided into two ***Ⅰ,observed in the oldest(LF1)sample,has poor MgO and high Ba/Nb,Th/Yb and *** remaining samples(PDC1–LD2)represent typeⅡ,characterized by high MgO and low Ba/Nb,Th/Yb and Sr *** suggest that type I is derived from AOC(altered oceanic crust)-rich melts that underwent significant crustal assimilation,while typeⅡoriginates from mantle-rich melts with less significant crustal *** early stage of typeⅡmagma(PDC1–LF3)was considered a closed system,evolving basaltic andesite into andesite(55.0–60.2 wt%SiO_(2))with a progressively increasing phenocryst(0.30–0.48φ_(PC))and decreasing crystal size distribution(CSD)slope(from-3.9 to-2.9).The evidence of fluctuating silica and phenocryst contents(between 55.9–59.7 wt%and 0.25–0.41φ_(PC),respectively),coupled with the kinked and steep(from-5.0 to-3.3)CSD curves imply the interchanging condition between open(i.e.,magma mixing)and closed magmatic systems during the middle stage(LF4–LF6).Finally,it underwent to closed system again during the final stage(LF7–LD2)because the magma reached dacitic composition(at most 68.9 wt%SiO_(2))with abundant phenocryst(0.38–0.45φ_(PC))and gentle CSD slope(from-4.1 to-1.2).

关键词： Sumbing Whole-rock geochemistry Petrogenesis Fractionation Magma mixing Crystal size distribution

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：