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Identification of Extr.cts r.sponsible for.the Effect of Tick r.ppeling Activity of Tur.er.c

Open Jour.al of Applied Sciences 2022年第1期12卷 51-58页

作者： Wattevidanage J. Per.r. Pr.sad Senadeer. Par.hir.ge P. D. C. Per.r. derrick r. kulatunge Depar.ment of Zoology Faculty of Natural Sciences The Open University of Sri Lanka Nawala Nugegoda Sri Lanka Depar.ment of Botany Faculty of Natural Sciences The Open University of Sri Lanka Nawala Nugegoda Sri Lanka Depar.ment of Chemistr. Faculty of Natural Sciences The Open University of Sri Lanka Nawala Nugegoda Sri Lanka

Tur.er.c (Cur.uma longa L.) is one of the essential condiments all over.the wor.d. Tur.er.c is an impor.ant medicine in the easter. medical systems and its ther.peutic pr.per.ies have been well r.cor.ed. Cur.umin, com... 详细信息

Tur.er.c (Cur.uma longa L.) is one of the essential condiments all over the world. Turmeric is an important medicine in the eastern medical systems and its therapeutic properties have been well recorded. Curcumin, commonly called diferuloyl methane (hydrophobic polyphenol), was studied extensively for its biological properties. Sri Lankan turmeric records relatively higher percentage (up to 9%) of curcumin. The bioactive compounds with insecticidal or pesticidal activity were studied fr.m the Sr. Lankan tur.er.c as ther. is an incr.asing demand for.natur.l pr.ducts to contr.l ticks and fleas in dogs against the chemicals that induce some secondar. effects. Fifty gr.ms (50 g) of dr.ed coar.ely gr.und tur.er.c (Cur.uma longa L.) was subjected to sequential extractions with four different solvents in ascending order of polarity using Soxhlet apparatus. The treatments consisted of solvent-fractionated turmeric extracts from hexane, dichloromethane (CH2Cl2), ethyl acetate (EtOAc) and Methanol (CH3OH) dissolved in the water to 100 ppm. The test carried out using a modified olfactometer and the degree of repellency of common tick species Rhipicephalus

关键词： Cur.umin Modified Olfactometer Fr.ctionated Cur.uma longa L. Sequential Ther.peutic

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Feeding the Childr.n Chinese assistance nour.shes Uganda’s next gener.tion

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ChinAfr.ca 2025年第1期17卷 42-43页

作者： derrick SILIMINA 不详

Adr.ano Kanyesigye and his fr.ends walk up to 5 miles each day to attend a school wher. they ar. ser.ed a fr.e ***’s a jour.ey that pupils in Kar.moja in nor.heast Uganda willingly make to avoid star.ation.“I’m r.ally gr.teful that my kids have at least one meal a day when they go to school,r.ther.than staying home wher. food is scar.e,”Anisha Kanyesigye told ChinAfr.ca.“At home,we have nothing to *** we boil sor.hum or.eat adaka-a r.sidue fr.m locally br.wed alcohol.”The 30-year.old r.sident of Kar.moja explained that the r.gion is str.ggling with hunger.as the local population is sever.ly impacted by a food cr.sis caused by dr.ught and pests.

关键词： nothing nor.heast r.ally

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PSA velocity may not be of value in pr.state cancer.detection

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Asian Jour.al of Andr.logy 2011年第4期13卷 616-617页

作者： derrick Johnston Mar.ha K Ter.is Section of Ur.logy Georgia Health Sciences University Augusta GA 30904 USA

Pr.state cancer.is the most pr.valent nonskin cancer.and is the thir. leading cause of cancer.death in the United States. It is estimated to affect millions of men wor.dwide and is a significant cause of mor.idity and... 详细信息

关键词： PSA detection

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Speed and sur.ace steepness affect inter.al tibial loading dur.ng r.nning

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Jour.al of Spor. and Health Science 2024年第1期13卷 118-124页

作者： Hannah r.ce Mar.us Kur. Patr.ck Mai Leon r.ber.z Kevin Bill Timothy r.derrick Steffen Willwacher Depar.ment of Physical Per.or.ance Norwegian School of Sport SciencesOslo 0806Norway Spor.s Tech r.sear.h Centr. Mid Sweden UniversityÖstersund SE-83125Sweden Depar.ment of Mechanical and Pr.cess Engineer.ng Offenburg University of Applied SciencesOffenburg 77652Germany Institute of Biomechanics and Or.hopaedics German Sport University CologneCologne 50933Germany Depar.ment of Kinesiology Iowa State UniversityAmesIA 50011USA

Backgr.und:Inter.al tibial loading is influenced by modifiable factor. with implications for.the r.sk of str.ss *** encounter.var.ed sur.ace steepness(gr.dients)when r.nning outdoor. and may adapt their.speed accor.ing to the *** study aimed to quantify tibial bending moments and str.ss at the anter.or.and poster.or.per.pher.es when r.nning at differ.nt speeds on sur.aces of differ.nt ***:Twenty r.cr.ational r.nner. r.n on a tr.admill at 3 differ.nt speeds(2.5 m/s,3.0 m/s,and 3.5 m/s)and gr.dients(level:0%;uphill:+5%,+10%,and+15%;downhill:-5%,-10%,and-15%).For.e and mar.er.data wer. collected synchr.nously *** moments wer. estimated at the distal thir. centr.id of the tibia about the medial-later.l axis by ensur.ng static equilibr.um at each 1%of *** was der.ved fr.m bending moments at the anter.or.and poster.or.per.pher.es by modeling the tibia as a hollow ***-way r.peated-measur.s analysis of var.ance wer. conducted using both functional and discr.te statistical ***:Ther. wer. significant main effects for.r.nning speed and gr.dient on peak bending moments and peak anter.or.and poster.or.*** r.nning speeds r.sulted in gr.ater.tibial *** uphill at+10%and+15%r.sulted in gr.ater.tibial loading than level *** downhill at-10%and-15%r.sulted in r.duced tibial loading compar.d to level *** was no differ.nce between+5%or.5%and level ***:r.nning at faster.speeds and uphill on gr.dients≥+10%incr.ased inter.al tibial loading,wher.as slower.r.nning and downhill r.nning on gr.dients≥-10%r.duced inter.al *** r.nning speed accor.ing to the gr.dient could be a pr.tective mechanism,pr.viding r.nner. with a str.tegy to minimize the r.sk of tibial str.ss injur.es.

关键词： Bending moments Gr.dient Musculoskeletal modeling Over.se injur. Tibial str.ss Tr.ining factor.

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Impacts of wetting-dr.ing cycles on shor.-ter. car.on and nitr.gen dynamics in Amynthas ear.hwor. casts

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Pedospher. 2021年第3期31卷 423-432页

作者： Michelle Man Suet LAW derrick Yuk Fo LAI Depar.ment of Geogr.phy and r.sour.e Management The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina Depar.ment of Biology Hong Kong Baptist UniversityKowloon TongKowloonHong Kong SARChina Centr. for.Envir.nmental Policy and r.sour.e Management The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina

Effects of ear.hwor. casts on soil nutr.ent dynamics and their.r.sponses to changing moistur. availability in subtr.pical ecosystems r.main poor.y *** study aimed to examine shor.-ter. car.on(C)and nitr.gen(N)dynamics and their.inter.ctions with wetting-dr.ing cycles in thr.e differ.nt str.ctur.l for.s(i.e.,gr.nular.globular.and heap-like)of Amynthas ear.hwor. *** r.tes of C and N miner.lization in the ear.hwor. casts wer. examined under.two differ.nt wetting-dr.ing cycles(i.e.,2-d and 4-d wetting inter.als)using a r.infall simulation *** thr.e simulated r.infall events,subsamples of the ear.hwor. casts wer. fur.her.incubated for.4 d for.the deter.ination of CO2 and N2O *** r.sults of this study indicated that the impacts of wetting-dr.ing cycles on the shor.-ter. C and N dynamics wer. highly var.able among the thr.e cast for.s,but wetting-dr.ing cycles significantly r.duced the cumulative CO2 and N2O fluxes by 62%-83%and 57%-85%,r.spectively,when compar.d to the contr.l without being subjected to any r.infall *** C miner.lization r.tes in differ.nt cast for.s wer. affected by the amount of or.anic substr.tes and N content in casts,which wer. associated with the food pr.fer.nce and selection of ***,the cumulative N2O fluxes did not differ.among the thr.e cast *** wetting and dr.ing of casts not only enhanced aggr.gate stability by pr.moting bonds between the cast par.icles,but also inhibited micr.bial sur.ival and gr.wth dur.ng the pr.longed dr.ing per.od,which together.hinder.d decomposition and *** findings demonstr.ted that the inter.ctions between the str.ctur.l for.s,aggr.gate dynamics,and C and N cycling in the ear.hwor. casts wer. highly complex.

关键词： aggr.gate stability Cand N cycling ear.hwor. activity ear.hwor. casting gr.enhouse gas flux miner.lization or.anic matter r.infall simulation

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Dextr.n sodium sulfate colitis mur.ne model: An indispensable tool for.advancing our.under.tanding of inflammator. bowel diseases pathogenesis

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Wor.d Jour.al of Gastr.enter.logy 2017年第33期23卷 6016-6029页

作者： derrick D Eichele Kusum K Khar.anda Depar.ment of Inter.al Medicine Nebraska Medical Center r.sear.h Ser.ice Veterans Affairs Nebraska-Western Iowa Health Care System Depar.ment of Biochemistr. and Molecular.Biology Nebraska Medical Center

Inflammator. bowel diseases(IBD),including Cr.hn's disease and ulcer.tive colitis,ar. complex diseases that r.sult fr.m the chr.nic dysr.gulated immune r.sponse in the gastr.intestinal tr.ct. The exact etiology is not fully under.tood,but it is accepted that it occur. when an inappr.pr.ate aggr.ssive inflammator. r.spon-se in a genetically susceptible host due to inciting envir.nmental factor. occur.. To investigate the path-ogenesis and etiology of human IBD,var.ous animal models of IBD have been developed that pr.vided indispensable insights into the histopathological and mor.hological changes as well as factor. associated with the pathogenesis of IBD and evaluation of ther.peutic options in the last few decades. The most widely used exper.mental model employs dextr.n sodium sulfate(DSS) to induce epithelial damage. The DSS colitis model in IBD r.sear.h has advantages over.other.var.ous chemically induced exper.mental models due to its r.pidity,simplicity,r.pr.ducibility and contr.llability. In this manuscr.pt,we r.view the newer.publicized advances of r.sear.h in mur.ne colitis models that focus upon the disr.ption of the bar.ier.function of the intestine,effects of mucin on the development of colitis,alter.tions found in micr.bial balance and r.sultant changes in the metabolome specifically in the DSS colitis mur.ne model and its r.lation to the pathogenesis of IBD.

关键词： Dextr.n sodium sulfate Exper.mental colitis Inflammator. bowel disease Pathogenesis Intestinal bar.ier

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Joint Contact For.es with Changes in r.nning Str.de Length and Midsole Stiffness

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Jour.al of Science in Spor. and Exer.ise 2020年第1期2卷 69-76页

作者： Joshua M.Thomas WBr.nt Edwar.s Timothy r.derrick Depar.ment of Health Wellnessand SportUniversity of DubuqueDubuqueIA 52001USA Human Per.or.ance Labor.tor. Faculty of KinesiologyUniversity of CalgaryCalgaryAB T2N 1N4Canada Depar.ment of Kinesiology Iowa State University111L Forker BuildingAmesIA 50011USA

The pur.ose of this study was to deter.ine if lower.extr.mity joint loading was influenced by str.de length or.shoe midsole *** subjects completed 10 tr.als of over.r.und r.nning at an aver.ge speed of 4.43 m/s in each of thr.e condi-tions:nor.al r.nning,r.nning with a str.de length(SL)r.duced by 10%of nor.al,and r.nning with a cushioned midsole stiffness(i.e.,mechanical impact r.duction of 13.7-10.9 g).r.action for.es calculated fr.m inver.e dynamics wer. summed with muscle for.es estimated fr.m a musculoskeletal model using static optimization to obtain joint contact for.es at the hip,knee and ankle *** components of the contact for.es[axial,anter.or.poster.or.and medial-later.l(ML)]wer. examined using par.metr.c statistics(α=0.05).r.ducing str.de length r.sulted in significant decr.ases in absolute peak ankle contact for.es in the axial dir.ction(nor.al:-14.5±1.5 BW;r.duced SL:-14.0±1.6 BW)and the ML dir.ction(nor.al:0.67±0.23 BW;r.duced SL:0.61±0.21 BW).r.ducing str.de length also r.duced the peak absolute axial for.es at the knee(nor.al:-10.6±1.3 BW;r.duced SL:-9.8±1.2 BW)and the hip(nor.al:-7.26±2.24 BW;r.duced SL:-6.75±2.10 BW).The cushioned shoe did not statistically r.duce the peak absolute contact for.es fr.m the nor.al str.de condition at any of the *** hoc str.ss analysis suggested that the obser.ed changes in anter.or.hip for.e would incr.ase str.ss mor. than any of the other.statistically significant *** in str.de length appear.to decr.ase some joint contact var.ables but cushioning in the heel r.gion of the shoe does not.

关键词： Gait Injur. Compr.ssive for.e Shear.for.e Cushioning Str.in

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Finite Element Analysis of Femor.l Str.ins in Older.Adults Dur.ng Stair.Ascent and Descent

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Jour.al of Science in Spor. and Exer.ise 2022年第2期4卷 168-179页

作者： Chen Deng Jason C.Gillette Timothy r.derrick Division of Spor. Biomechanics School of Sport ScienceBeijing Sport UniversityNo.48Xinxi RoadBeijing 100084People’s Republic of China Depar.ment of Kinesiology Iowa State UniversityAmesIAUSA

Pur.ose Under.tanding the femur.load envir.nment dur.ng daily activity is necessar. for.the under.tanding of r.sk of femor.l pain,pain r.lated falls,and femor.l fr.ctur.s,which could help the design of osteogenic exer.ises or.the pr.venta-tive methods for.older.*** Using the finite element femur.analysis,this study was to estimate the femor.l str.ins at 9 cr.ss-sections along the long axis of femur.for.stair.ascent and descent(n=17;age:50-65 year.).Motion analysis and inver.e dynamics wer. com-bined with musculoskeletal modelling and optimization,then wer. used as input to a 3-D femur.model to estimate femor.l *** at the hip contact for.e peaks wer. *** The compr.ssive and tensile str.ins dur.ng stair.descent wer. gr.ater.than ascent for.all or.most cr.ss-sections,especially for.the pr.ximal cr.ss-sections of the femur.stair.ascent pr.duced−324.0±103.8 to−483.7±191.0μεcompr.ssive str.ins and descent pr.duced−608.8±288.4 to 1016.0±444.1με;stair.ascent pr.duced 336.2±105.4 to 391.8±136.9μεtensile str.ins and descent pr.duced 546.9±252.8 to 741.7±333.6με.Conclusion Str.ins r.pr.sent the mater.al defor.ation effect on the bone due to the sum of all the bone exter.al *** bone str.ins could help futur. studies analyze load conditions in a mor. compr.hensive way for.other.physical activities,which pr.dicts the r.sk of str.ss fr.ctur.s and tests if alter.ative methods(gait type change)could r.duce str.ss and str.in effectively.

关键词： Femor.l cr.ss-sections Finite element method Bone str.ins Stair.ascent and descent Older.adults

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Using Inductance as a Tuning Par.meter.for.r. Meta-atoms

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Nano-Micr. Letter. 2012年第2期4卷 103-109页

作者： derrick Langley r.nald A.Coutu Peter.J.Collins Air.For.e Institute of Technology Wright-Patterson Air Force Base

The r.sonant fr.quency of metamater.als str.ctur.d with split r.ng r.sonator.Sr.) meta-atoms is deter.ined pr.mar.ly thr.ugh the capacitance and inductance of the individual meta-atoms. Two designs that var. inductance incr.mentally wer. modeled, simulated, fabr.cated, and tested to investigate the r.le inductance plays in metamater.al designs. The designs consisted of str.tegically adding sections to the Sr. to incr.ase the inductance, but in a manner.that minimized capacitance var.ations. Each design showed a shift in r.sonant fr.quency that was pr.por.ional to the length of the added section. As the length of each section was incr.ased, the r.sonant fr.quency shifted fr.m 2.78 GHz to 2.18 GHz.

关键词： Inductance Meta-atom Metamater.al Split r.ng r.sonator r.dio Fr.quency r.sonance

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Investigation on the Optimal Wavelength for.Two-photon Mcr.scopy in Br.in Tissue

Investigation on the Optimal Wavelength for Two-photon Mcros...

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作者： derrick BOATENG 上海交通大学

学位级别：硕士

Two-photon micr.scopy（TPM）has been one of the most widely used fluor.scent micr.scopy methods in biological *** femtosecond laser.in the near.infr.r.d（NIr.r.nge showed better.penetr.tion in tissue due to less scatter.ng and *** method to estimate the optimal wavelength gener.lly accor.ing to the scatter.ng and absor.tion is somehow too r.ugh consider.ng the complex biological pr.per.y and other.factor. that influence *** this thesis,a model is developed to calculate the optimal wavelength in the NIr.r.nge for.differ.nt imaging depths by involving mor. par.meter. of *** calculated and exper.mental r.sults show good consistence but lar.e differ.nce fr.m the model with only scatter.ng and *** r.sults pr.sented her. may ther.for. br.ng better.under.tanding on TPM in tissue and help to develop mor. accur.te model for.the simulation of TPM.

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