|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Heavy metal concentrations in soils and plants in the vicinity of Arufu lead-zinc mine, Middle Benue Trough, Nigeria显示文摘This study focused on the influence of base metal mining on heavy metal levels in soils and plants in the vicinity of Arufu lead-zinc mine, Nigeria. Soil samples (0-15 cm depth) and plant samples were collected from cul-tivated farmlands in and around the mine, the unmineralized site and a nearby forest (the control site). The samples were analyzed for heavy metals (Fe, Zn, Mn, Cu, Pb, Cr and Cd) by Atomic Absorption Spectrophotometry (AAS). The physical properties of soils (pH and LOI) were also measured. Results showed that soils from cultivated farm-lands have neutral pH values (6.5-7.5), and low organic matter contents (<10%). Levels of Zn, Pb and Cd in culti-vated soils were higher than the concentrations obtained from the control site. These heavy metals are most probably sourced from mining and agricultural activities in the study area. Heavy metal concentrations measured in plant parts decreased in the order of rice leaves>cassava tubers>peelings. In the same plant species, metal levels decreased in the order of Zn>Fe>Mn>Cu>Pb>Cr>Cd. Most heavy metals were found in plant parts at average concentrations normally observed in plants grown in uncontaminated soil, however, elevated concentrations of Pb and Cd were found in a few cassava samples close to the mine dump. A stepwise linear regression analysis identified soil metal contents, pH and LOI as some of the factors influencing soil-plant metal uptake. | Nganje T.N. Adamu C.I. Ukpong E.E. | 2010 | Chinese Journal Of Geochemistry2010，29，2： | 3 |
| 2 | A controlled trial of modified electroeonvulsive therapy in schizophrenia in a Nigerian teaching hospital显示文摘 | Ukpong DI Makanjuola RO Morakinyo O | 2002 | West Afr J Meal2002，21，3： | 1 |
| 3 | Heavy metal distribution in sediments from Calabar River,Southeastern Nigeria 显示文摘 | Ntekim E E Ekwere S J Ukpong E E 1993 | 1993 | Environmental Geology1993，21，： | 1 |
| 4 | Vegetation and Its relation to soil nutrient and salinity in the calabar mangrove swamp, Nigeria显示文摘 | Ukpong I E | 1997 | Mangrove and Salt Marshes1997，1，： | 1 |
| 5 | Health-related quality of life in Nigerian patients with facial trauma and controls:a preliminary survey显示文摘 | Ukpong DI Ugboko VL Ndukwe KC | | 0，，04： | 1 |
| 6 | Heavy metal distribution in sediments from Calabar River,Southeastern Nigeria 显示文摘 | Ntekim E E Ekwere S J Ukpong E E 1993 | 1993 | Environmental Geology1993，21，： | 1 |
| 7 | Soil - vegetation interrelationships of mangrove swamps as revealed by multivariate analyses 显示文摘 | Ukpong I E | 1994 | Geoderma1994，64，12： | 1 |
| 8 | Soil-vegetation interrelationships of mangrove swamps as revealed by multivariate analyses显示文摘 | | 1994 | Geoderma1994，64，： | 1 |
| 9 | Physiological response of Clostridium carboxidivorans during conversion of synthesis gas to solvents in a gas‐fed bioreactor显示文摘 | Ukpong M N Atiyeh H K De Lorme M J | 2012 | Biotechnology and Bioengineering2012，109，11： | 1 |
| 10 | A con- trolled trial of modified electroconvulsive therapy in schiz- ophrenia in a Nigerian teaching hospital显示文摘 | Ukpong DL Makanjuola RO Morakinyo O | 2002 | West African journal of medicine2002，21，3： | 1 |
| 11 | Physiological response of Clostridium carboxidivorans during conversion of synthesis gas to solvents in a gas-fed bioreactor显示文摘 | Michael N Ukpong Hasan K Atiyeh Marthah J M De Lorme | 2012 | Biotechnology and Bioengineering2012，109，： | 1 |
| 12 | Proximate and Mineral Compositions of Noodles Made from Triticum durum, Digitaria exilis, Vigna unguiculata Flour and Moringa oleifera Powder显示文摘The objective of this study was to determine the proximate,mineral and sensory properties of noodles prepared from blends of Triticum durum(wheat),Digitaria exilis(acha),Vigna unguiculata(cowpea)flours and Moringa oleifera leaf powder(MLP).The flour samples were mixed in a four by four factorial,in complete randomized design(CRD)to formulate the composite blends at four different levels(25,50,75 and 100)which gave 16 samples.The flour samples were used to produce noodles and subjected to proximate,mineral and sensory analysis.Results of the proximate composition revealed that moisture content of the noodles ranged from 8.04-13.81%,ash 1.84-3.67%,fat 1.95-3.61%,crude protein 10.07-14.44%,carbohydrate 33.15-61.45%,dietary fibre 16.65-36.22%and caloric value 214.53-288.28 kJ/100 g.There was a significant increase(p<0.05)in the moisture,ash,fat,crude protein and dietary fibre of the noodles on the substitution with cowpea flour,acha flour and MLP.Results of mineral composition also showed that sodium content ranged from 1.58-11.76 mg/100 g,potassium 26.70-40.40 mg/100 g,calcium 18.03-59.02 mg/100 g,iron 6.18-21.53 mg/100 g and phosphorus 0.51-1.54 mg/100 g.Noodle sample produced from 75%wheat and 25%cowpea flours were significantly higher(p<0.05)in mineral content(except for potassium).Sensory evaluation results showed that cowpea and acha flours can be substituted at 25%levels with 75%,wheat flour and acha flour can as well be substituted at 50%with 50%cowpea flour while MLP at 2%with 50%wheat flour,23%acha flour and 25%cowpea flour without significantly(p<0.05)affected the sensory attributes of the noodles.This result therefore indicates that the use of these locally grown crops has the potential to increase the nutritional intake of consumers of this product. | Catherine A.Orisa Ukpong SUdofia(PhD) | 2019 | Journal of Food Science and Engineering2019，9，7： | 0 |
| 13 | TREMble Before TREM2:The Mighty Microglial Receptor Conferring Neuroprotective Properties in TDP-43 Mediated Neurodegeneration显示文摘Microglia were long hailed as solely infammatory cells,and though they are responsible for the brain's immuneresponse,they perform a variety of neuroprotective func-tions including the clearance of cellular and toxic debris^([1]).One toxic molecule known to be cleared by microglia isthe protein aggregate found in Alzheimer's Disease(AD),amyloid-B. | William A.Mills III Ukpong B.Eyo | 2023 | Neuroscience Bulletin2023，39，1： | 0 |
| 14 | 小胶质细胞在多种实验性癫痫发作模型中发挥有益作用显示文摘癫痫发病率高,影响各年龄层次,包括年轻人和老年人。目前临床上使用的抗癫痫药物都是根据已知的以神经元为中心的机制研发,但有约1/3的患者对现有药物的治疗无效。因此,有必要对癫痫产生和持续的其他替代和补充机制进行研究。神经炎症,广义上定义为中枢神经系统中免疫细胞和分子的激活。研究发现,神经炎症促进癫痫的发生,但参与该病理生理过程的特定细胞尚不清楚。小胶质细胞是大脑的主要炎症细胞。因为既往研究使用的方法对小胶质细胞的特异性较低,或者存在固有的混淆,所以小胶质细胞的作用一直存在争议。使用一种选择性靶向小胶质细胞的方法(以避免上述副作用),我们发现了小胶质细胞在限制化学惊厥、电性和高热性癫痫发作方面有广泛有益作用,并进一步发现小胶质细胞对控制癫痫发作的作用。 | Synphane Gibbs-Shelton Jordan Benderoth Ronald P Gaykema Justyna Straub Kenneth A Okojie Joseph O Uweru Dennis H Lentferink Binita Rajbanshi Maureen N Cowan Brij Patel Anthony Brayan Campos-Salazar Edward Perez-Reyes Ukpong B Eyo 杜一星(编译) | 2023 | 神经损伤与功能重建2023，18，6： | 0 |
| 15 | 小胶质细胞在脊髓背角突触可塑性和慢性疼痛中的重要作用显示文摘文章简介本研究发现,用强度为10 V的强直电刺激作用于小鼠的坐骨神经可引起脊髓背角C纤维突触LTP和持续至少35天的慢性疼痛,但不会引起传入神经元的损伤和炎症。为了排除强直电刺激引起的其他效应可能导致慢性疼痛,研究预先用利多卡因(钠通道阻断剂)阻断传入神经的动作电位,或阻断脊髓背角的NMDA受体。 | Li-Jun Zhou Jiyun Peng Ya-Nan Xu Wei-Jie Zeng Jun Zhang Xiao Wei Chun-Lin Mai Zhen-Jia Lin Yong Liu Madhuvika Murugan Ukpong BEyo Anthony DUmpierre Wen-Jun Xin Tao Chen Mingtao Li Hui Wang Jason RRichardson 谈智 刘先国 Long-Jun Wu | 2020 | 科学新闻2020，，2： | 0 |
| 16 | Predictive Model to Evaluate Accommodation of Conflict Management Strategies and Board Performance of Oil and Gas Companies in Port Harcourt显示文摘This paper evaluates accommodation of conflict management strategies and board performances in oil and gas sector.The study details the reflection of effectiveness,efficiency and productivity as the answer to thorough efficiency in accommodation of conflict management in oil and gas sector,these parameters in the system express their efficacy on conflict management in these multinationals,this implies that for thorough efficiency,these variables must work simultaneously for effective and efficient in structural organization that can be a leading multinational sector in oil and gas environment.The study observed Linearized result from graphical representation explaining predominant lower efficiency and little higher efficiency in accommodation of conflict management in oil and gas companies.These experiences from the study monitor the system from generated simulation values that describe the growth rates in exponential phase of accommodation conflict strategic management.Despite exponential phase the results experienced lower parameters,when comparing on its variations showing its poor efficiency as observed in the study.Few periods observed higher effective accommodation on conflict strategic management.The developed model stimulation values were subjected to validation and both parameters generated favourable fits correlation,the study expressed the deficiency on accommodation of conflict management strategy thus developed models that can monitor the fluctuation and progressive state of accommodation on conflict management strategy,it defines the reflection of other parameters that express the behaviour of the system in terms of conceptual approach to monitor these type of strategic management in oil and gas companies. | Eluozo S.N. Ukpong Uwem Johnson Eluozo.S. | 2021 | Journal of Management Science & Engineering Research2021，4，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员