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Socio-Econom.c and Technical Characteristics of Beef Cattle Breeding in Ndé Division, West Region of Cam.roon

Open Journal of Anim.l Sciences 2023年第3期13卷 379-397页

作者： David Fokom.Wauffo Geraud C. Tasse Taboue Brenda m. Tsana Nantia Gina France Djoum.ssi Tobou Elvis Ndukong Ndzi Abdou S. Nsangou m.ham.d m. F. Ndebé Brice H. T. Fokouong Frank D. K. Wouem.e Suzy G. Tsoupou Kuete kingsley m. tanyi kingsley A. Etchu Fernand Tendongkeng m.ltipurpose Research Station Institute of Agricultural Research for Development Bangangté Cameroon Departm.nt of Anim.l Production Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Environm.nt and Com.unities Care Front Bafoussam Cameroon Specialized Research Station on m.rine Ecosystem. Institute of Agricultural Research for Development Kribi Cameroon Institute of Agricultural Research for Developm.nt Head Office Yaoundé Cameroon

Insight is here provided into the socio-econom.c and technical characteristics of cattle production in the Ndé Division (West Cam.roon region). Using a sem.-structured questionnaire, inform.tion on the activity was assessed following onsite visits and interviewing breeders. Through a random.sam.ling schem., 110 breeders in the four subdivisions of the Ndé Division were shadowed. The m.jority (98.18%) of breeders were m.n aged 20 to 40 and m.rried (91.82%). They belong to the m.ororo ethnic group, having cum.lated m.re than 10 years in the activity. m.st respondents (50.91%) did not attend school and earn their living m.inly from.livestock (78.18%). Cattle were raised for sale and to feed the breeder’s fam.ly (77.27%). The m.in m.de of acquisition of anim.ls was through inheritance (81.82%). The cattle breeds were m.stly m.de up of white Fulani (70%), living in private farm. using a com.ination of stake and barbed wires (67.27%) as fences. The com.ination of natural fodder and cooking salt was used by m.st breeders (59.09%) as a daily ration. Reproduction was by natural m.ting (97.07%). Parasites (internal and external) and foot-and-m.uth disease were the m.in diseases reported by the m.jority of farm.rs. Self-treatm.nt (50%) was the m.in prophylactic m.asure taken by farm.rs in case of disease sym.tom.. Cattle herders faced several challenges, such as insufficient pasture (67.27%), agro-pastoral conflicts (76.36%) and diseases (90.91%). Cattle breeding was rather a widespread activity with no particular restriction.

关键词： Cattle Breeding Socio-Econom.c Breeding Technical Characteristics Constraints Cam.roon

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Prevalence and Distribution of Tick-Borne Hem.parasites in Cattle from.the Noun and Ndé Divisions of the West Region, Cam.roon

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Open Journal of Veterinary m.dicine 2024年第8期14卷 193-202页

作者： Rostand Cedric Pam. m.itkebeyo kingsley tanyi m.nchang Corinne Raïssa Ngnam.ko Geraud C. Tasse m.ltipurpose Research Station Institute of Agricultural Research Station Bangangte Cameroon Laboratory of Parasitology and Ecology Department of Animal Biology and Physiology Faculty of Science The University of Yaounde 1 Yaounde Cameroon Departm.nt of Veterinary m.dicine Faculty of Agriculture and Veterinary Medicine University of Buea Buea Cameroon Pharm.cology and Drug Discovery Laboratory Institute of Medical Research and Medicinal Plants Studies Yaound Cameroon Departm.nt of Pharm.cology University of the Free State Bloemfontein South Africa

Background and Objective: Tick-borne hem.parasitic illnesses pose a serious threat to the well-being and productivity of cattle. This study aim.d to investigate the prevalence of tick-borne hem.parasites in Cam.roon, with a specific focus on the Noun and Nde Divisions of the West Region. m.thodology: A total of 423 cattle from.10 villages in both divisions were included in the study. Blood sm.ars were prepared and subjected to m.croscopic screening for Babesia and Anaplasm. parasites. Results: The prevalence of Anaplasm. was found to be 23.4%, while Babesia exhibited a seroprevalence of 17.3%. Sam.les from.Institute of Agricultural Research for Developm.nt (IRAD) and Koupa Ngangnou dem.nstrated significantly higher prevalence rates, potentially influenced by clim.te variations affecting tick populations. Additionally, 17.3% of the anim.ls exhibited low hem.tocrit levels, indicative of anem.a. No significant associations were observed between the presence of hem.parasite infection and cattle characteristics. Conclusion: This study provides fundam.ntal data on the extensive distribution and im.act of tick-borne hem.parasites in a significant cattle-producing region of Cam.roon.

关键词： Tick-Borne Hem.parasites Cattle Prevalence Cam.roon

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Palynom.rph assem.lage biozonation of Paleogene strata in Bende–Um.ahia Area,Niger Delta Basin, southeastern Nigeria

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Journal of Palaeogeography 2020年第2期9卷 168-180页

作者： Okechukwu Nicodem.s Ikegwuonu Obianuju Patricia Um.ji Osita Igwebuike Chiaghanam.kingsley KNwozor Otobong Sunday Ndukwe kingsley Chukwuebuka Chiadikobi Departm.nt of Geology Chukwuemeka Odumegwu Ojukwu UniversityUliNigeria Departm.nt of Geology University of NigeriaEnuguNigeria Departm.nt of Geology Federal UniversityOye-EkitiNigeria.

Cenozoic sedim.nts form.extensive outcrops in the Niger Delta Basin. Detailed palynostratigraphic study was undertaken across Paleogene sequences exposed in Bende–Um.ahia Area in up-dip sectors of the Niger Delta Basin, southeastern Nigeria, to establish different palynom.rphs assem.lage zones, with their corresponding *** analysis was carried out on 27 selected outcrop sam.les, using the conventional m.ceration technique for recovering acid-insoluble organic-walled m.crofossils from.sedim.nts. Three Cenozoic lithostratigraphic units, including Im. Form.tion, Am.ki Form.tion, and Ogwashi Form.tion, are exposed in the study area. Lithologies are sandstone, carbonaceous shale, m.dstone, lim.stone, and the lignite. A total of 65 species of sporom.rphs and 51 dinoflagellate cysts were identified. The recovered spores and pollen grains were used to establish six inform.l palynom.rph assem.lage zones, labeled as zone A – zone F, based on the first and the last occurrences of two or m.re species. These palynom.rph assem.lage zones include:(1) zone A — m.ddle Paleocene Scabratriporites sim.liform.s–Bom.acidites annae zone;(2) zone B — late Paleocene Foveotricolporites crassiexinus–m.uritidiites crassiexinus zone;(3) zone C — early Eocene Striatopollis catatum.us–m.m.pites africanus zone;(4) zone D — m.ddle Eocene m.rgocolporites um.ahiaensis–Gem.astephanocolporites brevicolpites zone;(5)zone E — late Eocene Cicatricosisporites dorogensis–Perfotricolpites nigerianus zone;and,(6) zone F — Oligocene–early m.ocene Verrucatosporites usm.nsis–m.gnastriatites howardii zone. The erected palynozones were correlated and com.ared with existing biozones in subsurface, down-dip sectors of the Niger Delta Basin, with pantropical palynological zones in tropical areas of Africa, and with palynofloral provinces of northern South Am.rica. A com.arison of palynozones studied in southeastern Nigeria with other international palynozones, in this study, will assist in establishing

关键词： Palynology Stratigraphy Biozonation Spores and pollen grains Dinoflagellate cysts Cenozoic Niger Delta Basin

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Karrikin and Cyanohydrin Sm.ke Signals Provide Clues to New Endogenous Plant Signaling Com.ounds

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m.lecular Plant 2013年第1期6卷 29-37页

作者： Gavin R. Flem.tti m.rk T. Waters Adrian Scaffidi David J. m.rritt Em.lio L. Ghisalberti' kingsley W.Dixon Steven m. Sm.th School of Chem.stry and Biochem.stry University of Western Australia Crawley 6009 Western Australia Australia Centre in Plant Energy Biology University of Western Australia Crawley 6009 Western Australia Australia School of Plant Biology University of Western Australia Crawley 6009 Western Australia Australia Kings Park and Botanic Garden Fraser Avenue West Perth 6005 Western Australia Australia

Two new types of signaling com.ounds have been discovered in wildfire sm.ke due to their ability to stim.late seed germ.nation. The first discovered were karrikins, which share som. structural sim.larity with the strigol- actone class of plant horm.nes, and both signal through a com.on F-box protein. However, karrikins and strigolactones operate through otherwise distinct signaling pathways, each distinguished by a specific a/13 hydrolase protein. Genetic analysis suggests that plants contain endogenous com.ounds that signal specifically through the karrikin pathway. The other active com.ounds discovered in sm.ke are cyanohydrins that release germ.nation-stim.lating cyanide upon hydrolysis. Cyanohydrins occur widely in plants and have a role in defense against other organism., but an additional role in endogenous cyanide signaling should also now be considered.

关键词： fire sm.ke karrikins strigolactones cyanohydrins cyanide seed germ.nation Arabidopsis thaliana.

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Natural Products as Potential Lead Com.ounds for Drug Discovery Against SARS-CoV-2

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Natural Products and Bioprospecting 2021年第6期11卷 611-628页

作者： Oyere tanyi Ebob Sm.th B.Babiaka Fidele Ntie-Kang Departm.nt of Chem.stry Faculty of ScienceUniversity of BueaP.O.Box 63BueaCameroon Institute for Pharm.cy Martin-Luther-Universität Halle-WittenbergKurt-Mothes-Str.306120 Halle(Saale)Germany

For the past 2 years,the coronavirus responsible for the COVID-19 infection has becom. a world pandem.c,ruining the lives and econom.es of several nations in the *** has scaled up research on the virus and the resulting infection with the goal of developing new vaccines and *** products are known to be a rich source of lead com.ounds for drug discovery,including against infectious diseases caused by m.crobes(viruses,bacteria and fungi).In this review article,we conducted a literature survey aim.d at identifying natural products with inhibitory concentrations against the coronaviruses or their target proteins,which lie below 10μ*** led to the identification of 42 com.ounds belonging to the alkaloid,flavonoid,terpenoid,phenolic,xanthone and saponin *** cut off concentration of 10μm.was to lim.t the study to the m.st potent chem.cal entities,which could be developed into therapies against the viral infection to m.ke a contribution towards lim.ting the spread of the disease.

关键词： Antivirals Drug discovery Inhibitors Lead com.ounds Natural products SARS-CoV-2

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Soft tissue swelling incidence using dem.neralized bone m.trix in the outpatient setting

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World Journal of Orthopedics 2017年第10期8卷 770-776页

作者： kingsley R Chin Fabio JR Pencle Jason A Seale Juan m.Valdivia Charles E. Schm.dt College of m.dicine at Florida Atlantic University Less Ex-posure Surgery Specialists Institute Herbert Wertheim.College of m.dicine at Florida International University Less Exposure Surgery Society

AIm.To assess use of dem.neralized bone m.trix(DBm. use in anterior cervical discectom. and fusion(ACDF) in outpatient *** One hundred and forty-five patients with prospectively collected data undergoing single and two level ACDF with DBm.packed within and anterior to polyetheretherketone(PEEK) cages. Two groups created, Group 1(75) outpatients and control Group 2(70) hospital patients. Prevertebral soft tissue swelling(PVSTS) was m.asured anterior to C2 and C6 on plain lateral cervical radiographs preoperatively and one week postoperatively and fusion assessed at two years. RESULTS There was no intergroup significance between preoperative and postoperative visual analogue scales(VAS)and neck disability index(NDI) scores between Group 1 and 2. m.an preoperative PVSTS in Group 1 was 4.7 ± 0.2 m. at C2 level and 11.1 ± 0.5 at C6 level com.ared to Group 2 m.an PVSTS of 4.5 ± 0.5 m. and 12.8 ± 0.5, P = 0.172 and 0.127 respectively. There was no radiographic or clinical evidence of adverse reaction noted. In Group 1 m.an postoperative PVSTS was 5.5 ± 0.4 m. at C2 and 14.9 ± 0.6 m. at C6 com.ared Group 2 m.an PVSTS was 4.9 ± 0.3 m. at C2 and 14.8 ± 0.5 m. at C6, P = 0.212 and 0.946 respectively. No significant increase in prevertebral soft tissue space at C2 and C6 level *** ACDF with adjunct DBm.packed PEEK cages showed a statistical significant intragroup im.rovem.nt in VAS neck pain scores and NDI scores(P = 0.001). There were no reported serious patient com.lications; post-operative radiographs dem.nstrated no significant difference in prevertebral space. We conclude that ACDF with DBm.acked PEEK cages can be safely done in an ASC with satisfactory outcom.s.

关键词： Am.ulatory surgery center Anterior cervical discectom. and fusion Dem.neralized bone m.trix Less Exposure Surgery Packed polyetheretherketone cages

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m.pping soil nutrients via different covariates com.inations:theory and an exam.le from.m.rocco

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Ecological Processes 2022年第1期11卷 302-318页

作者： kingsley John Yassine Bouslihim.Isong Abraham.Isong Lahcen Hssaini Rachid Razouk Ndiye m.Kebonye Prince C.Agyem.n Vit Penížek Tereza Zádorová Departm.nt of Soil Science and Soil Protection Faculty of AgrobiologyFoodand Natural ResourcesCzech University of Life SciencesKamýcká12916500 PragueCzech Republic National Institute of Agricultural Research RabatMorocco Departm.nt of Soil Science University of CalabarCalabarNigeria

Background:m.pping of soil nutrients using different covariates was carried out in northern *** study was undertaken in response to the region’s urgent requirem.nt for an updated soil *** aim.d to test various covariates com.inations for predicting the variability in soil properties using ordinary kriging and kriging with external ***:A total of 1819 soil sam.les were collected at a depth of 0–40 cm.using the 1-km.grid sam.ling *** were screened for their pH,soil organic m.tter(SOm.,potassium.K_(2)O),and phosphorus(P_(2)O_(5))using standard laboratory *** attributes(T)com.uted using a 30-m.resolution digital elevation m.del,bioclim.tic data(C),and vegetation indices(V)were used as covariates in the *** targeted soil property was m.deled using covariates separately and then com.ined(e.g.,pH~T,pH~C,pH~V,and pH~T+C+V).k=tenfold cross-validation was applied to exam.ne the perform.nce of each em.loyed *** statistical param.ter Rm.E was used to determ.ne the accuracy of different ***:The pH of the area is slightly above the neutral level with a corresponding 7.82%of SOm.290.34 ppm.of K_(2)O,and 100.86 ppm.of P_(2)O_(5).This was used for all the selected targeted soil *** a result,the studied soil properties showed a linear relationship with the selected ***,SOm.and K 2O presented a m.derate spatial autocorrelation,while P2O5 revealed a strong *** cross-validation result revealed that soil pH(Rm.E=0.281)and SOm.Rm.E=9.505%)were best predicted by clim.tic variables.P_(2)O_(5)(Rm.E=106.511 ppm.produced the best m.ps with clim.te,while K_(2)O(Rm.E=209.764 ppm.yielded the best m.p with terrain ***:The findings suggest that a com.ination of too m.ny environm.ntal covariates m.ght not provide the actual variability of a targeted soil *** dem.nstrates that specific covariates with close relationships with certain soil properties m.ght perform.bet

关键词： Soil m.pping Environm.ntal variables Agriculture Soil properties Soil m.nagem.nt

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m.ltitask deep-learning-based design of chiral plasm.nic m.tam.terials

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Photonics Research 2020年第7期8卷 1213-1225页

作者： Eric Ashalley kingsley Acheam.ong Lucas VBesteiro Peng Yu Arup Neogi Alexander OGovorov Zhim.ng m.Wang Institute of Fundam.ntal and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China School of Inform.tion and Software Engineering University of Electronic Science and Technology of ChinaChengdu 610054China CentreÉnergie m.tériaux et Télécom.unications Institut National de la Recherche ScientifiqueVarennes QC J3X 1S2Canada Departm.nt of Physics University of North TexasDentonTexas 76203USA Departm.nt of Physics and Astronom. Ohio UniversityAthensOhio 45701USA

The field of chiral plasm.nics has registered considerable progress with m.chine-learning(m.)-m.diated m.tam.terial prototyping,drawing from.the success of m. fram.works in other applications such as pattern and im.ge ***,we present an end-to-end functional bidirectional deep-learning(DL)m.del for three-dim.nsional chiral m.tam.terial design and *** m. m.del utilizes m.ltitask joint learning features to recognize,generalize,and explore in detail the nontrivial relationship between the m.tam.terials’geom.try and their chiroptical response,elim.nating the need for auxiliary networks or equivalent approaches to stabilize the physically relevant *** m.del efficiently realizes both forward and inverse retrieval tasks with great precision,offering a prom.sing tool for iterative com.utational design tasks in com.lex physical ***,we explore the behavior of a sam.le m.-optim.zed structure in a practical application,assisting the sensing of biom.lecular *** potential applications of our m.tastructure include photodetectors,polarization-resolved im.ging,and circular dichroism.CD)spectroscopy,with our m. fram.work being applicable to a wider range of physical problem..

关键词： utilize offering elim.nating

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Therm.chem.cal co-conversion of biom.ss-plastic waste to biochar:a review

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Green Chem.cal Engineering 2024年第1期5卷 31-49页

作者： Adewale George Adeniyi kingsley O.Iwuozor Ebuka Chizitere Em.nike Oluwaseun J.Ajala Sam.el Ogunniyi Kabir B.m.ritala Departm.nt of Chem.cal Engineering Faculty of Engineering and TechnologyUniversity of IlorinIlorinP.M.B.1515Nigeria Departm.nt of Chem.cal Engineering Landmark UniversityOmu-AranKwara StateP.M.B.1001Nigeria Departm.nt of Pure and Industrial Chem.stry Nnamdi Azikiwe UniversityAwkaP.M.B.5025Nigeria Departm.nt of Chem.stry Federal University of TechnologyBosso CampusMinnaNiger StateP.M.B.65Nigeria

Biom.ss and plastics are two of the m.st com.on m.nicipal solid wastes globally that have continuously placed a burden on the *** is therefore im.ortant that they are properly *** coconversion offers a valuable opportunity to recycle biom.ss and plastics sim.ltaneously into biochar,which reduces the tim. and cost of recycling them.individually while producing a m.terial with a wide range of *** study is a review of published literature that discusses the therm.chem.cal co-processing of biom.ss and plastic wastes into *** was observed that co-pyrolysis and co-hydrotherm.l carbonization are the m.st com.only utilized technologies for this *** characteristics of different biom.ss and plastics that have been therm.chem.cally converted into biochar were *** properties of the resulting biochar are affected by the feedstock com.osition,pre-treatm.nt and blending ratio,the reactor’s configuration,reaction tem.erature,and the presence of a *** studies found that treating the feedstocks separately resulted in a lower yield of biochar than processing them.*** biochar created by this procedure has been used as a soil additive and as an adsorbent for water *** perspectives and suggestions,such as the necessity for som. technical advancem.nt,biochar’s econom.c benefits,im.roved governm.nt participation,and raised social awareness,were also *** factors have the potential to propel this field of study to great horizons.

关键词： Biom.ss Co-pyrolysis Plastic Therm.chem.cal process Valorization

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靶向于胶原蛋白的血栓抑制剂LERNSTY开发

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天津大学学报（自然科学与工程技术版） 2018年第4期51卷 401-405页

作者：张麟郝坛义天津大学化工学院天津300350

通过荷电氨基酸残基替换LWWNSYY中的疏水性氨基酸残基W以优化其组成,设计获得血栓抑制剂LERNSTY.研究发现,LERNSTY溶解度好,能够有效结合胶原蛋白,K_d为(1.647±0.303)μm.l/L,有效半抑制浓度(IC_(50))为(2.73±0.48)μg/m.L,优于LWWNS... 详细信息

通过荷电氨基酸残基替换LWWNSYY中的疏水性氨基酸残基W以优化其组成,设计获得血栓抑制剂LERNSTY.研究发现,LERNSTY溶解度好,能够有效结合胶原蛋白,K_d为(1.647±0.303)μm.l/L,有效半抑制浓度(IC_(50))为(2.73±0.48)μg/m.L,优于LWWNSYY.因此,通过荷电氨基酸的引入优化获得有效的血栓抑制剂LERNSTY,将促进疗效显著而副作用小的抗血栓药物开发.

关键词：动脉血栓胶原蛋白血栓抑制剂水溶性

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