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Search Results: 1 - 10 of 759398 matches for " J.C.A.; "
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鲱、鲽在卵和卵黄囊期仔鱼发育阶段生化成分的变化
殷名称,J.C.A.Craik
海洋与湖沼 , 1993,
Abstract: 本文以产沉(粘)性卵的鲱(Clupea harengus L.)和浮性卵的鲽(Pleuronectes platessa L.)为代表,对这两类海洋鱼类在卵和卵黄囊期仔鱼发育阶段水分、钠、钾、脂肪和蛋白质含量变化作了比较研究。实验于1987年春在苏格兰完成。结果发现:1) 鲱的含水量在三个阶段有明显增长,受精时从75% - 85%,卵发育期从85% - 87%,孵化后从85% - 90%; 通过这一成功变化,最终使仔鱼获得浮性,上升并进入浮游生物水层摄食;鲽卵含水量在这三个阶段均保持在90% - 92%,并一直保持相应的浮性,至摄食期。2) 两种初孵仔鱼含水量的差别,主要由卵黄囊含水量不同引起,而身体其它部分含水量没有显著种的差别。3) 鲱在钠、钾含量上的增长和波动,大致同这三个阶段湿重和含水量的增长和波动一致。4) 脂肪和蛋白质对卵和仔鱼的浮性几乎不起作用;两种鱼在卵和卵黄囊期发育阶段,脂肪和蛋白质含量均呈线性下降。
In vitro effekte van aragidoonsuur en prostaglandien E2 op proliferasie, osteoklastvorming en beenresorpsie in RAW 264.7 muismakrofae
M.J. Laing,J.C.A. Boeyens,M. Coetzee
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie , 2012, DOI: 10.4102/satnt.v31i1.292
Abstract:
In vitro effekte van eikosapenta n esuur en prostaglandien E3 op proliferasie, osteoklastvorming en beenresorpsie in RAW 264.7 muismakrofae
A.E. Kasonga,J.C.A. Boeyens,M. Coetzee
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie , 2012, DOI: 10.4102/satnt.v31i1.290
Abstract:
Use of Ir192 interstitial brachytherapy for an equine malignant dermal schwannoma : clinical communication
M.N. Saulez,A. Voigt,J.C.A. Steyl,E. Van Wilpe
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v80i4.225
Abstract: A 10-year-old Hanoverian mare was evaluated for a right buccal swelling that recurred 3 months following surgical resection. Ultrasonographic examination showed a broadly pedunculated subcutaneous mass at the level of 106-109 and 406-409 cheek teeth associated with an erosive mucosal lesion on the inside of the cheek. Histological examination of a biopsy specimen revealed a well-demarcated, malignant, dermal schwannoma. Following subcutaneous placement of platinum coated Ir192 wires under general anaesthesia, low-dose radiation of 5 gray per day was delivered for 14 days. Short-term complications included loss of patency of the right nasolacrimal duct, erythema, dermatitis, leukotrichia and left-sided deviation of the muzzle. Ten months later, there has been no tumour recurrence. Findings suggest that the use of interstitial brachytherapy should be considered for a malignant, dermal schwannoma that has recurred or is not amenable to surgery.
Electroanalysis of Heavy Metals in the Cork of Quercus Suber Tree. Preliminary Study: Electroanaliticity of Pb(II)
Sousa,J.C.A.C. Ponte e; Teixeira,J.M. Ginja; Vaz,A.M. Neto;
Portugaliae Electrochimica Acta , 2003,
Abstract: this will enable pb(ii) determination optimisation, regarding environmental aspects of the perpetuation of quercus suber montado (similar to forest). it will also allow a more profound toxicological quality control of corks (barks). these two last referred aspects are very related ones, once accepted that the more advanced could the certification of the quality patterns of corks (barks) be, more will be the sustainability of quercus suber ecosystem. which we believe can be done, amongst other vectors, by studying such an important environmental issue as heavy metals. it is shown that pb(ii) quantification in the cork (bark) of quercus suber tree (cork oak) is possible, using differential pulse anodic stripping voltammetry (dpasv). the samples digestion was made in a mixture of h2o2 and hno3 1:8, in a closed recipient at approximately 90 oc. the measures were made in nacl 0.1 m, using a hanging mercury drop electrode, a glassy-carbon rod counter electrode, and an ag/agcl/kcl 3m reference electrode, after a 180 s deposition step. the results have shown the determination of a coherent stripping potential of -0.405 v (sd=0.0005 v), and a fine linear adjustment after the standard addition method (r2 = 0.997). they have also revealed the interest of further studies. the need to test other electroanalysis requisites was understood, and imposed by the proof of the complex nature of the matrix.
Electroanalysis of Heavy Metals in the Cork of Quercus Suber Tree. Preliminary Study: Electroanaliticity of Pb(II)
J.C.A.C. Ponte e Sousa,J.M. Ginja Teixeira,A.M. Neto Vaz
Portugaliae Electrochimica Acta , 2003,
Abstract: This will enable Pb(II) determination optimisation, regarding environmental aspects of the perpetuation of Quercus suber Montado (similar to Forest). It will also allow a more profound toxicological quality control of corks (barks). These two last referred aspects are very related ones, once accepted that the more advanced could the certification of the quality patterns of corks (barks) be, more will be the sustainability of Quercus suber ecosystem. Which we believe can be done, amongst other vectors, by studying such an important environmental issue as heavy metals. It is shown that Pb(II) quantification in the cork (bark) of Quercus suber tree (Cork Oak) is possible, using Differential Pulse Anodic Stripping Voltammetry (DPASV). The samples digestion was made in a mixture of H2O2 and HNO3 1:8, in a closed recipient at approximately 90 oC. The measures were made in NaCl 0.1 M, using a Hanging Mercury Drop Electrode, a Glassy-Carbon Rod Counter Electrode, and an Ag/AgCl/KCl 3M reference electrode, after a 180 s deposition step. The results have shown the determination of a coherent stripping potential of -0.405 V (SD=0.0005 V), and a fine linear adjustment after the standard addition method (R2 = 0.997). They have also revealed the interest of further studies. The need to test other electroanalysis requisites was understood, and imposed by the proof of the complex nature of the matrix.
Infec??o experimental em cabritos pelo vírus da artrite encefalite
Guedes, M.I.M.C.;Souza, J.C.A.;Gouveia, A.M.G.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001, DOI: 10.1590/S0102-09352001000100003
Abstract: the caprine arthritis encephalitis virus (caev) experimental infection was studied in 24 one-week-old seronegative kids. sixteen kids were inoculated with caev-cork, with 106 tcid50/ml concentration, being eight inoculated intravenously, and eight intranasally. eight animals were used as controls, being four inoculated intravenously, and four intranasally with non-infected cell culture medium. since the day of the inoculation, clinical evaluation was performed daily, until the day of the sacrifice. blood samples were taken for serological tests. the animals were killed in pairs at 2, 6, 12 and 20 days post-inoculation (pi) and tissues samples of central nervous system, joints, tonsils, lymphonodes, lungs, kidneys, thymus, spleen, small and large intestine were collected for histopathological and immunohistochemical studies. one animal caev inoculated intranasally and killed at 20 days pi showed immunohistochemical positive reaction in an alveolar macrophage. it was concluded that transmission by air is a probable rote of caev infection.
Infec o experimental em cabritos pelo vírus da artrite encefalite
Guedes M.I.M.C.,Souza J.C.A.,Gouveia A.M.G.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001,
Abstract: Vinte e quatro caprinos de uma semana de idade, soronegativos pela imunodifus o em gel de agar para artrite encefalite caprina (AEC), foram utilizados para estudo de infec o experimental pelo vírus da AEC. Dezesseis animais foram inoculados com lentivirus caprino, amostra Cork, oito pela via intravenosa e oito por instila o nasal. Oito animais serviram como controle, inoculados pelas vias intranasal ou intravenosa com 1ml de meio de cultura de células n o infectadas. Os animais foram sacrificados aos 2, 6, 12 e 20 dias pós-inocula o (PI), e colhidas amostras do sistema nervoso central, articula es, tonsilas, linfonodos, pulm es, rins, timo, ba o e intestinos delgado e grosso para histopatologia e imunoistoquímica. Um animal inoculado com o vírus da AEC pela via intranasal e sacrificado aos 20 dias PI apresentou imunomarca o positiva em um macrófago alveolar. Concluiu-se que a via aerógena é uma provável rota de infec o pelo vírus da AEC.
Serum concentrations of creatine kinase and of triglycerides during lactation in gilts bred older and in multiparous sows fed ad libitum
Nogueira, R.H.G.;Guedes, R.M.C.;Souza, J.C.A.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2000, DOI: 10.1590/S0102-09352000000100015
Abstract: the aim of this paper was to assess the possible variation in blood concentrations of creatine kinase (ck) and triglycerides in gilts bred older in comparison with multiparous sows. ten primiparous and ten camborough multiparous sows from the fourth to seventh parities were used. breeding age and weight of gilts averaged respectively 231 days and 149.5kg. all females were moved into individual farrowing crates and were managed under the same conditions. blood samples were collected by puncturing the coccygeal artery on day 7 before expected farrowing, and on days 2, 7, 14, 21 of lactation and 2 days after weaning. no difference in triglycerides and ck serum concentrations between groups were observed. the ck levels were low before farrowing, increased substantially on days 2 and 7 and decreased toward the end of lactation. the concentrations of triglycerides were slightly high before the parturition, diminished on days 2, 7, 14 and 21 and increased after weaning.
Serum concentrations of creatine kinase and of triglycerides during lactation in gilts bred older and in multiparous sows fed ad libitum
Nogueira R.H.G.,Guedes R.M.C.,Souza J.C.A.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2000,
Abstract: The aim of this paper was to assess the possible variation in blood concentrations of creatine kinase (CK) and triglycerides in gilts bred older in comparison with multiparous sows. Ten primiparous and ten Camborough multiparous sows from the fourth to seventh parities were used. Breeding age and weight of gilts averaged respectively 231 days and 149.5kg. All females were moved into individual farrowing crates and were managed under the same conditions. Blood samples were collected by puncturing the coccygeal artery on day 7 before expected farrowing, and on days 2, 7, 14, 21 of lactation and 2 days after weaning. No difference in triglycerides and CK serum concentrations between groups were observed. The CK levels were low before farrowing, increased substantially on days 2 and 7 and decreased toward the end of lactation. The concentrations of triglycerides were slightly high before the parturition, diminished on days 2, 7, 14 and 21 and increased after weaning.
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