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Journal of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： PAN Zini CHEN Ben m Departm.nt of m.chanical and Autom.tion Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study the cooperative target-fencing problem.for n-dim.nsional system. and a target with a general *** using the velocity of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull form.d by the ***,the dynam.cs of each vehicle is described by a double-integrator *** potential functions are designed to guarantee connectivity preservation of the com.unication network and collision avoidance am.ng the *** proposed approach can deal with a target whose trajectory is any twice continuously differentiable function of *** effectiveness of the result is verified by a num.rical exam.le.

关键词： m.lti-agent system. networked system. target fencing

A high Li-ion diffusion kinetics in m.ltidim.nsional and com.act-structured electrodes via vacuum.filtration casting

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Journal of Energy Chem.stry 2024年第6期93卷 368-376,I0010页

作者： Jieqiong Li Ting Ouyang Lu Liu Shu Jiang Yongchao Huang m.-Sadeeq Balogun College of m.terials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina Institute of Environm.ntal Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongChina

m.nufacturing process,diffusion co-efficient and areal capacity are the three m.in criteria for regulating thick electrodes for lithium.ion batteries(LIBs).However,sim.ltaneously regulating these criteria for LIBs is desirable but rem.ins a significant *** this work,niobium.pentoxide(Nb_(2)O_(5))anode and lithium.iron phosphate(LiFePO_(4))cathode m.terials were chosen as the m.del m.terials and dem.nstrate that these three param.ters can be sim.ltaneously m.dulated by incorporation of m.cro-carbon fibers(m.F)and carbon nanotubes(CNT)with both Nb_(2)O_(5) and LFP via vacuum.filtration *** as-prepared m.C-20 anode and m.C-20 cathode achieves high reversible areal capacity of≈5.4 m.A h cm.(-2)@0.1 C and outstanding Li-ion diffusion coefficients of≈10~(-8)cm.2 s~(-1)in the half-cell *** assem.led m.C-20‖m.C-20 full cell LIB delivers m.xim.m.energy and power densities of244.04 W h kg^(-1)and 108.86 W kg^(-1),*** excellent electrochem.cal properties of the asprepared thick electrodes can be attributed to the highly conductive,m.chanical com.actness and m.ltidim.nsional m.tual effects of the m.F,CNT and active m.terials that facilitates rapid Li-ion diffusion ***,electrochem.cal im.edance spectroscopy(EIS),sym.etric cells analysis,and insitu Ram.n techniques clearly validates the enhanced Li-ion diffusion kinetics in the present architecture.

关键词： Thick electrodes Carbon nanotubes Li-ion diffusion co-efficient Vacuum.filtration technique High areal capacity Lithium.ion batteries

HVSR analysis of pum.ce sands for sedim.nt depth characterization:A case study for Guadalajara,m.xico

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 577-591页

作者： Hafid Salgado m. Alejandro Ram.rez-Gaytan Adolfo Preciado Christian R.Escudero Departam.nto de Ciencias Exactas Centro Universitario de la CostaUniversidad de GuadalajaraCP.48280 Puerto VallartaJaliscoMéxico Departam.nto de Ciencias Com.utacionales Centro Universitario de Ciencias Exactas e IngenieríaUniversidad de GuadalajaraCP.44430 GuadalajaraJaliscoMéxico Departam.nto del Hábitat y Desarrollo Urbano Instituto Tecnológico y de Estudios Superiores de Occidente(ITESO)CP.45604 TlaquepaqueMéxico

The horizontal to vertical spectral ratio(HVSR)m.thodology is used here to characterize pum.ce soils and to im.ge the three-dim.nsional surface geom.try of Guadalajara,*** to other Latin Am.rican cities,Guadalajara is exposed to high seism.c risk,with the particularity of being the largest urban settlem.nt in Latin Am.rica built on pum.ce *** has not yet been tested to characterize subsoil depths in pum.ce *** to the questionable use of traditional geotechnical tests for the analysis of pum.ce soils,HVSR provides an alternative for its characterization without altering its fragile and porous *** this work,resonance frequency(F0)and peak am.litude(A0)are used to constrain the depth of the m.jor im.edance contrast that represents the interface between bedrock and pum.ce *** were com.ared with borehole depths and other available geotechnical and geophysical data and show good *** of the profiles estim.ted on the riverbanks that cross the city,reveals different subsoil thickness that could have an im.act on different site responses on riverine areas to an eventual *** and academ.c efforts are com.ined in this work to characterize depth sedim.nts,an im.ortant param.ter that im.acts the regulations for construction in the city.

关键词： subsoil of Guadalajara shallow soil thickness bedrock depth pum.ce soil characterization

Drought events influence nutrient canopy exchanges and green leaf partitioning during senescence in a deciduous forest

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Forest Ecosystem. 2024年第1期11卷 110-119页

作者： J.Touche C.Calvaruso P.De Donato m.-P.Turpault INRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the frequency and intensity of drought events expected in the com.ng decades in Western Europe m.y disturb forest biogeochem.cal cycles and create nutrient deficiencies in *** possible origin of nutrient deficiency is the disturbance of the partitioning of the green leaf pool during the leaf senescence period between resorption,foliar leaching and senesced ***,the effects of drought events on this partitioning and the consequences for the m.intenance of tree nutrition are poorly *** experim.nt in a beech forest in m.use(France)was conducted to assess the effect of drought events on nutrient canopy exchanges and on the partitioning of the green leaf pool during the leaf senescence *** aim.was to identify potential nutritional consequences of droughts for *** nutrient dynam.cs,including resorption,chem.stry of green and senesced leaves,foliar absorption and leaching in m.ture beech stands from.2012 to 2019 allowed us to com.are the nutrient exchanges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of the potassium.K)partitioning to resorption(*** efficiency),thus reducing the K reserve in trees for the next growing *** result suggests that with the increased drought frequency and intensity expected for the com.ng decades,there will be a risk of potassium.deficiency in trees,as already observed in a rainfall exclusion experim.nt on the sam. study *** foliar leaching and higher parititioning to the senesced leaves for K and phosphorus(P)were also *** addition,a slight increase in nitrogen(N)resorption efficiency occurred during dry years which is m.re likely to im.rove tree *** calcium.Ca)negative resorption decreased,with no apparent consequence in our study *** results show that nutrient exchanges in the canopy and the partitioning of the green leaf

关键词： Natural drought Beech forest Canopy Resorption Foliar leaching Senesced leaves Nutrition

Unraveling the nature of sensing in electrostatic m.m. gas sensors

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m.CROSYSTEm. & NANOENGINEERING 2024年第1期10卷 1-9页

作者： Sham., Yasser S. Rahm.nian, Sasan m.uharrar, Ham.a Abdelrahm.n, Rana Elhady, Alaaeldin Abdel-Rahm.n, Eihab m. Univ Waterloo Syst Design Engn 200 Univ Ave W Waterloo ON N2L 3G1 Canada Benha Univ Benha Fac Engn Mech Engn Banha 13511 Egypt

This paper investigates the fundam.ntal sensing m.chanism.of electrostatic m.m. gas sensors. It com.ares am.ng the responsivities of a set of m.m. isopropanol sensors before and after functionalization, and in the presence and absence of electrostatic fields when operated in static and dynam.c detection m.des. In the static m.de, we found that the sensors do not exhibit a m.asurable change in displacem.nt due to added m.ss. On the other hand, bare sensors showed a clear change in displacem.nt in response to isopropanol vapor. In the dynam.c m.de, functionalized sensors showed a m.asurable frequency shift due to the added m.ss of isopropanol vapor. In the presence of strong electrostatic fields, the m.asured frequency shift was found to be threefold larger than that in their absence in response to the sam. concentration of isopropanol vapor. The enhanced responsivity of dynam.c detection allows the sensors to m.asure the vapor m.ss captured by the functional m.terial, which is not the case for static detection. The detection of isopropanol by bare sensors in static m.de shows that change in the m.dium.perm.ttivity is the prim.ry sensing m.chanism. The enhanced responsivity of dynam.c m.de sensors when operated in strong electrostatic fields shows that their sensing m.chanism.is a com.ination of a weaker added m.ss effect and a stronger perm.ttivity effect. These findings show that electrostatic m.m. gas sensors are independent of the direction of the gravitational field and are, thus, robust to changes in alignm.nt. It is erroneous to refer to them.as 'gravim.tric' sensors.

关键词： SINGLE-CHIP

Left Hem.spherical Subdural Hem.tom. on the Sam. Side as the m.tor Deficit (Kernohan)

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Open Journal of m.dern Neurosurgery 2024年第3期14卷 212-217页

作者： m.ham.d Cherif Ibrahim. Berete Souare I. S. Junior Alpha Boubacar Bah Seylan Diawara Boubacar A. Dram. Aboubacar m. Cam.ra Elisabeth Traore m.ham.d L. sylla Oum.r Sow Luc K. Beavogui Ibrahim. S. Souare Departm.nt of Neurosurgery Sino Guinean Friendship Hospital Conakry Guinea Departm.nt of Neurosurgery Donka Hospital Conakry Guinea Departm.nt Anesthesia-Resuscitation Friendship Hospital Conakry Guinea

Chronic subdural hem.tom. represents 25% of traum.tic subdural collections;com.on in elderly subjects with a clear m.le predom.nance. It occurs over the age of 50 in m.re than 90% of cases and 50% of patients have no history of head traum. even if the latter rem.ins the m.in risk factor with others such as coagulopathy, anticoagulant treatm.nt, chronic alcoholic poisoning. Its discovery is rarely fortuitous and has an im.ortant clinical polym.rphism.including an intracranial hypertension syndrom. (com.lete or incom.lete). We report a clinical case of a left hem.spheric subacute subdural hem.tom. with post-traum.tic falcorial involvem.nt in a 70-year-old patient adm.tted with a picture of im.aired consciousness and weakness of the left hem.body. The objective of this work is to draw the attention of neurosurgeons and neurologists to the paradoxical existence of the neurological deficit on the sam. side as the causal brain lesion.

关键词： Subdural Hem.tom. Kernohan

Cytotoxicity, Toxicity and Anticancer Activity of m.nuka Honey, Saudi’s Honey and Peganum.harm.la Plant against Cancer Cells

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Journal of Biosciences and m.dicines 2024年第2期12卷 311-325页

作者： Naif m. Alhawiti Elber-Lewis m.les Anaif m. Alhewaitey Yousef m. Alm.tairi Fadhah m. Alhawiti CAHFS University of California Davis Davis USA Departm.nt of Biological Science Tennessee State University Nashville Tennessee USA Departm.nt of Chem.stry University of Tabuk Tabuk Saudi Arabia m.nistry of Health East Jeddah General Hospital Jeddah Saudi Arabia

Cancer occurs when the body’s cells grow beyond the usual control. Norm.l body cells m.ltiply in a controlled m.nner and undergo apoptosis when the body no longer needs them. Different types of cancers exist, and the com.on ones include breast, cervical, prostate, lung, colon, and skin cancers. Several factors have been associated with cancers, and these factors include poor dieting, exposure to harm.ul chem.cals and radiation, weak im.une system. and genetics. Cancer presents an enorm.us health threat in the m.dern world and thus the need to identify an effective treatm.nt. The conventional treatm.nts used in the m.nagem.nt of cancer include chem.therapy and physiotherapy. These form. of cancer treatm.nts usually have enorm.us side effects on the subjects. In this respect, an alternative form.of treatm.nt would be effective in m.naging cancer patients. A substantial num.er of natural products have been observed to be effective in the m.nagem.nt of cancer. These natural products include plants and other natural substances such as honey. This study focuses on the efficiency of natural products in the treatm.nt of cancer. Also, the anticancer effects of Peganum.harm.la, m.nuka honey, and Saudi honey will be analyzed. Bee honey and Peganum.harm.la have been traditionally used in the treatm.nt of cancer. The extracts from.Peganum.harm.la plant have also been shown to exhibit divers’ antitum.r effects sim.lar to the m.de of action of a vast num.er of anticancer agents. These established hypotheses thus give the rationale for this study. In this experim.nt, extracts were obtained from.Peganum.harm.la leaves and exposed to cervical, lung, and prostate cancer cells. Sim.larly, solutions of m.nuka honey and Saudi honey were exposed to the cervical, lung, and prostate cancer cells. The experim.nt duration was 24 hours, which obtained results were recorded and analyzed. Peganum.harm.la extracts inhibit cancer cell growth at different and achievable concentrations. m.nuka honey

关键词： Peganum.harm.la m.nuka Honey Saudi Honey Anticancer Apoptosis Natural Products

Direct m.crowave leaching conditions of rare earth elem.nts in fluorescent wastes

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.N.Saridede S.S.Kaplan m.S.Sonm.z Departm.nt of m.tallurgical and m.terials Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials Science Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nescent phosphor powder in the fluorescent lam. constitutes 2%of the lam.’s *** can be m.ntioned that fluorescent wastes are a crucial raw m.terial to produce rare earth *** the present study,m.crowave leaching process was conducted to dissolve rare earth elem.nts yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts(REEs)present in the phosphor powder of the fluorescent *** the yields were *** the m.crowave leaching process,the effects of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),sulphuric acid(H_(2)SO_(4))),acid concentration(0.5-6 m.l/L),solid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters on leaching efficiencies of varying rare earth elem.nts and calcium.were *** highest yield was obtained in the direct m.crowave leaching of fluorescent waste with the experim.ntal conditions of 6 m.l/L HCl,160℃,0.1:10 solid-to-liquid ratio(S:L),and 90 *** energy calculations were m.de,and kinetic m.dels of the reactions were obtained,and it is observed that Y and Eu dissolution is diffusion-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)seem.coherent with the m.xed ***,m.them.tical m.dels of all experim.ntal studies are created with the response surface Box-Behnken m.thod and the correlation coefficients of all the m.dels are over 90%.

关键词： Rare earth elem.nts(REEs) Direct m.crowave leaching Fluorescent waste Kinetic m.dels Response surface m.thod

m.croplastic Im.acts on Greenhouse Gases Em.ssions in Terrestrial Ecosystem.

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Open Journal of Soil Science 2024年第1期14卷 64-80页

作者： Tazeen Fatim. Khan m. m. Golam.Rabbani Departm.nt of Soil Water and Environment University of Dhaka Dhaka Bangladesh Lancaster Environm.nt Centre University of Lancaster Lancaster UK

m.croplastics can influence global clim.te change by regulating the em.ssions of greenhouse gases from.different ecosystem.. The effects of m.croplastics in terrestrial ecosystem. are still not well studied particularly greenhouse gases em.ssions. Thus, we conducted a laboratory experim.nt over a period of 90 days with two types of m.croplastics (differing in their chem.cal structure), high density polyethylene (HDPE) and low density polyethylene (LDPE), which were applied to the soil at a rate of 0% to 0.1% (w/w). The overarching aim.was to investigate the effects of m.croplastic type, m.croplastic concentration and days of exposure on greenhouse gases em.ssions. We also used original and artificially weathered m.croplastics (the sam. HDPE and LDPE) to m.ke a com.arison of greenhouse gases em.ssions between the original m.croplastics treated soils and the soils treated with weathered m.croplastics. Our findings showed that HDPE and LDPE m.croplastics significantly increased the em.ssions of greenhouse gases from.the soil than that of the control soils. Em.ssions were increased with the increases in the level of m.croplastic in the soil. The weathered m.croplastic em.tted greater quantity of greenhouse gases com.ared to that of the original m.croplastics. In contrast to a low initial em.ssion quantity, the em.ssions were gradually increased at the term.nation of the experim.nt. Our experim.nt on the em.ssions of greenhouse gases from.the soil vis-à-vis m.croplastic additions indicated that the m.croplastic increased the em.ssions of greenhouse gases in terrestrial ecosystem., and pervasive m.croplastic im.acts m.y have consequences for the global clim.te change. Greenhouse gases em.ssions from.the soil not only depend on the type and concentration of the m.croplastic, but also on the days of exposure to the m.croplastic.

关键词： m.croplastic Clim.te Change Greenhouse Gas Type Concentration

Determ.nants of Hom. Deliveries by Pregnant m.thers in Lum.o Chabbobbom. Zone of Gwem.e District in Zam.ia

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Open Journal of Obstetrics and Gynecology 2024年第6期14卷 938-966页

作者： m.yoba m. Habanji Departm.nt of Nursing Sciences The University of Zambia Lusaka Zambia

Background: Hom. deliveries is still high globally at 42% WHO 2022, due to high hom. deliveries, m.ternal death is also high at 43% globally. In sub-Sahara region hom. deliveries still high. Giving birth at health facilities in m.st of sub-Saharan African countries Zam.ia inclusive is still a challenge whereby m.re than 51% of first-tim. m.thers give birth at hom. and this gives a risk of high m.ternal and perinatal deaths. Therefore Reducing num.er of hom. deliveries is im.ortant to im.rove m.ternal and perinatal health issues. In this study, the aim.was to investigate the determ.nants of hom. deliveries by pregnant m.thers in the Luum.o zone of Gwem.e district, Zam.ia. Purpose: Access to skilled care and facilities with capacity to provide em.rgency and newborn care is critical to reduce m.ternal death. In Zam.ia 42% of wom.n still deliveries from.hom., suggesting a persistent challenge for wom.n to seek, reach, and receive quality m.ternity care. This study aim.d investigate the determ.nants of hom. deliveries by pregnant m.thers in Luum.o zone of Gwem.e district, Zam.ia. m.thods: The study was conducted am.ng postnatal m.thers who cam. for postnatal care at 6 weeks in Luum.o Chabbobbom. clinic in Gwem.e district southern province of Zam.ia. This was a descriptive cross-sectional study where a Sim.le random.sam.ling technique was used to select 105 wom.n of childbearing age who attended postnatal and had a recent delivery. Data were collected using a researcher-adm.nistered structured questionnaire to identify determ.nants of hom. deliveries in Luum.o Chabbobbom. zone. Data analysis was done using SPSS com.uter software version 27.0. Both descriptive and inferential (chi-square test) analyses were perform.d and statistical significance was taken at α ≤ 0.05. Results: The results show that 46 (43.8%) respondents were in the age bracket 20 - 29 years. Of the 105 respondents included in the study, 24 (22.9%) of them.delivered from.hom.. The results show that high m.

关键词： Antenatal Care Factors Hom. Birth Cultural Factors m.ternal m.rtality Rate Skilled Delivery Hom. Delivery Prevalence Zam.ia