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| Registros recuperados: 149 | |
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| Silva, Ricardo Carlos Pereira da; Oliveira, Francisco de Assis de; Oliveira, Ademar Pereira de; Medeiros, José Francismar de; Alves, Rita de Cássia; Paiva, Francisco Italo Gomes. |
| Bell peppers are sensitive to salinity; therefore, it is necessary to find alternatives to reduce saline stress. An experiment was conducted in a greenhouse at Federal Rural University of the Semi-Arid Region, in Mossoró, Rio Grande do Norte State, Brazil, to evaluate the effects of salinity and K+/Ca2+ ratios on bell pepper production. The experimental design consisted of randomized blocks in a 5 x 4 factorial scheme with four replicates, corresponding to five K+/Ca2+ ratios (F1 = 3.3/1, F2 = 2.8/1, F3 = 2.2/1, F4 = 1.8/1, and F5 = 1.5/1) and four salinity levels in the nutrient solution using NaCl (1.75, 3.25, 4.75, and 6.25 dS m-1). The following parameters were evaluated: the number of fruits (total, marketable and unmarketable), the mean weight of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum L.; Salinity; Potassium; Calcium; Soilless culture. Capsicum annuum L.; Salinity; Potassium; Calcium; Soilless culture.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42498 |
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| Freiria, André Costa; UNESP; Mantovani, José Ricardo; Universidade José do Rosario vellano; Ferreira, Manoel Evaristo; UNESP; Cruz, Mara Cristina Pessôa da; UNESP; Yagi, Renato; UNESP. |
| A aplicação de calcário, na superfície do solo, é necessária em algumas situações agrícolas. O objetivo desse trabalho foi verificar alterações em atributos químicos de um solo de textura média, em razão da aplicação de calcário na superfície ou incorporado. O experimento foi conduzido em condições de laboratório, em colunas de PVC, delineamento inteiramente ao acaso, em esquema fatorial 2 x 4 e uma testemunha, com quatro repetições. Os tratamentos consistiram na combinação de duas doses de calcário (4 e 2 t ha-1) e 4 formas de aplicação do corretivo (aplicado na superfície, sem incorporação, e calcário incorporado nas profundidades de 0 a 5; 0 a 10 e 0 a 20 cm), além da testemunha em que não foi feita a calagem. Após 326 dias de incubação do solo com o... |
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Palavras-chave: 5.01.01.00-5 Ciência do Solo calagem; Acidez do solo; PH; Saturação por bases; Cálcio; Magnésio 5.01.01.00-5 Ciência do Solo liming; Soil acidity; PH; Base saturation; Calcium; Magnesium. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1738 |
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| Nóbrega, Giovanna Henriques da; UFCG; Silva, Aderbal Marcos de Azevêdo; UFCG; Pereira Filho, José Morais; UFCG; Azevedo, Solange Absalão; UFCG; Silva, Guilherme de Lira Sobral; UFCG; Alcalde, Claudete Regina; UEM. |
| Este trabalho teve como objetivo estimar a composição corporal e exigências nutricionais em macrominerais para ganho de peso de cabritos ½ Boer ½ SRD, na fase de crescimento, em pastejo na região semiárida. O experimento foi desenvolvido na fazenda ‘Nupeárido’, no município de Patos, Estado da Paraíba. Foram utilizados 24 cabritos com peso corporal médio inicial de 15 kg, em pastejo, distribuídos em quatro tratamentos com níveis crescentes de suplementação concentrada (0; 0,5; 1,0 e 1,5% do peso corporal). Os animais, mantidos em sistema de semiconfinamento, receberam suplementação alimentar, em baias individuais, ao serem recolhidos diariamente. Quando um dos animais de cada grupo atingia 30 kg de peso corporal, todos os demais... |
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Palavras-chave: 5.04.00.00-2 Zootecnia cabritos; Cálcio; Fósforo; Potássio; Sódio; Semiárido Exigências Nutricionais dos Animais kid goats; Calcium; Phosphorus; Potassium; Sodium; Semi-arid. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4797 |
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| Baldin, Samira Rodrigues; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Millen, Danilo Domingues; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Martins, Cyntia Ludovico; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Pereira, Angélica Simone Cravo; Universidade de São Paulo; Barducci, Robson Sfaciotti; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Arrigoni, Mário De Beni; Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| This experiment was conducted at Unesp feedlot facility, campus of Botucatu, and aimed to evaluate the supplementation of D and E vitamins on animal performance, carcass characteristics and meat quality of yearling bulls finished in feedlot. Thirty-six 7-mo-old yearling bulls, 18 Nellore (NEL) and 18 Canchim (CAC), with average initial body weight of 234.53 ± 22.15 and 248.13 ± 34.67 kg, respectively, were fed for 126 days. Nine NEL and nine CAC yearling bulls were daily supplemented with 1300 IU of vitamin E and 7.5 x 106 IU of vitamin D3 for 67 days and 10 days before slaughter, respectively. One day before slaughter, blood samples were collected for evaluation of Ca concentration. After chilling, Longissimus muscle (LM) samples were collected for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.03.00-1; 5.04.03.02-8; 5.04.05.00-4 calcium; Color; PH; Tenderness Nellore; Calcium; Color; PH: Tenderness. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18801 |
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| Smaili,Soraya; Hirata,Hanako; Ureshino,Rodrigo; Monteforte,Priscila T.; Morales,Ana P.; Muler,Mari L.; Terashima,Juliana; Oseki,Karen; Rosenstock,Tatiana R.; Lopes,Guiomar S.; Bincoletto,Claudia. |
| Transient increase in cytosolic (Cac2+) and mitochondrial Ca2+ (Ca m2+) are essential elements in the control of many physiological processes. However, sustained increases in Ca c2+ and Ca m2+ may contribute to oxidative stress and cell death. Several events are related to the increase in Ca m2+, including regulation and activation of a number of Ca2+ dependent enzymes, such as phospholipases, proteases and nucleases. Mitochondria and endoplasmic reticulum (ER) play pivotal roles in the maintenance of intracellular Ca2+ homeostasis and regulation of cell death. Several lines of evidence have shown that, in the presence of some apoptotic stimuli, the activation of mitochondrial processes maylead to the release of cytochrome c followed by the activation of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium; Apoptosis; Bax; Mitochondria; Endoplasmic reticulum; Neurodegeneration and aging. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300011 |
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| KAUR,GURPREET; BALI,ANJANA; SINGH,NIRMAL; JAGGI,AMTESHWAR S.. |
| The present study was designed to investigate the ameliorative potential of Ocimumsanctum and its saponin rich fraction in chronic constriction injury-induced neuropathic pain in rats. The chronic constriction injury was induced by placing four loose ligatures around the sciatic nerve, proximal to its trifurcation. The mechanical hyperalgesia, cold allodynia, paw heat hyperalgesia and cold tail hyperalgesia were assessed by performing the pinprick, acetone, hot plate and cold tail immersion tests, respectively. Biochemically, the tissue thio-barbituric acid reactive species, super-oxide anion content (markers of oxidative stress) and total calcium levels were measured. Chronic constriction injury was associated with the development of mechanical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chronic constriction injury; Ocimum sanctum; Saponin rich fraction; Calcium; Oxidative stress. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100417 |
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| Thiagarajan,Venkata R.K.; Shanmugam,Palanichamy; Krishnan,Uma M.; Muthuraman,Arunachalam; Singh,Nirmal. |
| The present study was designed to investigate the ameliorative role of ethanolic extract from leaves of Butea monosperma in chronic constriction injury (CCI) of sciatic nerve induced neuropathic pain in rats. Hot plate, acetone drop, paw pressure, Von Frey hair and tail immersion tests were performed to assess the degree of thermal hyperalgesia, cold chemical allodynia, mechanical hyperalgesia & allodynia in the left hind paw and tail thermal hyperalgesia. Further on, thiobarbituric acid reactive substances (TBARS), reduced glutathione (GSH) and total calcium levels were estimated to assess the biochemical changes in the sciatic nerve tissue. Histopathological changes were also observed in the sciatic nerve tissue. Ethanolic extract of Butea... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anti-oxidant; Butea monosperma; Calcium; Chronic constriction injury; Reduced glutathione; Thiobarbituric acid reactive substance. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400023 |
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| Giovaninni,L.H.; Kogika,M.M.; Lustoza,M.D.; Kanayama,K.K.; Reche Júnior,A.. |
| Values of sodium, ionized calcium, potassium and chloride obtained by ion-selective electrode method, from serum and blood samples of healthy cats, were compared. Serum ionized calcium value was lower (5.2mg/dl) than blood ionized calcium (5.4mg/dl), and serum potassium (4.47mmol/l) and serum chloride (117.2mmol/l) values were higher than blood potassium (3.94mmol/l) and blood chloride (115mmol/l). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cat; Calcium; Chloride; Sodium; Potassium. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000300040 |
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| Santos,B.N.C.; Silva,C.C.C V.; Domingues,J.R.; Cortez,M.A.S.; Freitas,D.D.G.C.; Chiappini,C.C.J.; Araújo,K.G.L.. |
| Milk calcium concentration is a factor related to cheese texture, an important rheological property of cheese quality as perceived by consumers. This study aimed to evaluate the effect of different pH conditions (5.8 and 6.6) and calcium addition (0, 150, 300 ppm of CaCl2), on yield and nutrient retention of the clots obtained and on the texture of Minascured cheese. Clots were analyzed for wet and dry yield, percentage content and retention of protein, fat and calcium. The texture of the cheese was evaluated by instrumental and sensorial tests. No differences were observed on the wet and dry yields, or on the protein content, fat and calcium retention of clots produced in the different experimental conditions. The instrumental evaluation showed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cheese; PH; Calcium; Clotting; Texture. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200042 |
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| Wang,Hui; Liu,Zheng; Zhang,Wenxiu; Yuan,Ziao; Yuan,Hongyi; Liu,Xueting; Yang,Chunwen; Guan,Weijun. |
| BACKGROUND: Heavy metals can cause great harm to Siberian tigers in the natural environment. Cadmium (Cd2+) is an environmental contaminant that affects multiple cellular processes, including cell proliferation, differentiation, and survival. It has been shown to induce apoptosis in a variety of cell types and tissues. RESULTS: We investigated the apoptotic effects of Cd2+ on Siberian tiger fibroblasts in vitro. Our research revealed the typical signs of apoptosis after Cd²+ exposure. Apoptosis was dose- (0-4.8 μΜ) and duration-dependent (12-48 h), and proliferation was strongly inhibited. Cd²+ increased the activity of caspase-3, -8, and -9 and disrupted calcium homeostasis by causing oxidative stress and mitochondrial dysfunction. It... |
| Tipo: Journal article |
Palavras-chave: Siberian tiger; Cadmium; Apoptosis; Fibroblast; Calcium. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602016000100042 |
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| MACKENZIE,LAUREN; RODERICK,H. LLEWELYN; PROVEN,ANDREW; CONWAY,STUART J; BOOTMAN,MARTIN D. |
| Inositol 1,4,5-trisphosphate (InsP3) is an established calcium-mobilizing messenger, which is well-known to activate Ca2+ signaling in many cell types. Contractile cardiomyocytes express hormone receptors that are coupled to the production of InsP3. Such cardioactive hormones, including endothelin, may have profound inotropic and arrhythmogenic actions, but it is unclear whether InsP3 underlies any of these effects. We have examined the expression and localization of InsP3 receptors (InsP3Rs), and the potential role of InsP3 in modulating cardiac excitation-contraction coupling (EC coupling). Stimulation of electrically-paced atrial and ventricular myocytes with a membrane-permeant InsP3 ester was found to evoke an increase in the amplitudes of action... |
| Tipo: Journal article |
Palavras-chave: Calcium; Cardiac; Inositol; Arrhythmia; Ryanodine. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000400008 |
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| WILLIAMS,ALAN J; TANNA,BHAVNA. |
| Ryanodine binds with high affinity and specificity to a class of Ca2+-release channels known as ryanodine receptors (RyR). The interaction with RyR results in a dramatic alteration in function with open probability (Po) increasing markedly and rates of ion translocation modified. We have investigated the features of ryanodine that govern the interaction of the ligand with RyR and the mechanisms underlying the subsequent alterations in function by monitoring the effects of congeners and derivatives of ryanodine (ryanoids) on individual RyR2 channels. While the interaction of all tested ryanoids results in an increased Po, the amplitude of the modified conductance state depends upon the structure of the ryanoid. We propose that different rates of cation... |
| Tipo: Journal article |
Palavras-chave: Calcium; Ca2+-release channel; Sarcoplasmic reticulum; Ryanodine; Single channel. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000400006 |
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| MUÑOZ,PABLO; ZAVALA,GABRIELA; CASTILLO,KAREN; AGUIRRE,PABLA; HIDALGO,CECILIA; NÚÑEZ,MARCO T. |
| Recent evidence suggests that reactive oxygen species function as second messenger molecules in normal physiological processes. For example, activation of N-Methyl-D-Aspartate receptor results in the production of ROS, which appears to be critical for synaptic plasticity, one of the cellular mechanisms that underlie learning and memory. In this work, we studied the effect of iron in the activation of MAPK/ERK pathway and on Ca2+ signaling in neuronal PC12 cells. We found that iron-dependent generation of hydroxyl radicals is likely to modulate Ca2+ signaling through RyR calcium channel activation, which, in turn, activates the MAPK/ERK pathway. These findings underline the relevance of iron in normal neuronal function. |
| Tipo: Journal article |
Palavras-chave: NMDA receptor; Calcium; Iron; Oxidative stress; MAPK/ERK; Hippocampal slices; Long-term potentiation. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000100021 |
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| Registros recuperados: 149 | |
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