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1.
The effect of treatment and supplementary value of corn (C) or crayfish (CR) on the protein quality of breadfruit (Treculia Africana) flours were studied in eighteen young rats. The 7030 or 701515 (Protein basis) combinations of breadfruit flours and corn or crayfish or both provided 1.6g N/100 g diet for the 35 day study. The addition of akanwu to the cooking water reduced cooking time and crude protein and saved fuel. The addition of akanwu and replacement of CR with C was not beneficial as judged by the parameters tested except for the wt. gain and PER. On the other hand, when crayfish was the only source of supplementary protein (30%) to breadfruit cooked without akanwu there were increases in all parameters tested over those with added akanwu except for the N intake, wt. gain, and PER.These results appear to suggest that addition of akanwu to TA was detrimental to its protein utilization and that TA appears to be an economic source of N in areas where it is a staple. Based on the results of this study, one would suggest that the use of akanwu as a tenderizer should be seriously looked into before further use. 相似文献
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《中国水稻研究通报》1995,(3)
Bensulfuron-Methyl(BSM) is a highly active sulfonylurea herbicide that effectively controls most annual and perennial broadleaf or sedge weeds in paddy field. However, the activity of BSM is affected by several evironmental factors. Using corn seedlings as material, we found that under different temperatures 相似文献
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Guo-Quan Zhu 《Fibers and Polymers》2009,10(4):425-429
Poly(γ-benzyl L-glutamate)-graft-poly(ethylene glycol) (PBLG-graft-PEG) copolymer was synthesized by the ester exchange reaction of PBLG homopolymer with PEG chain. Chemical structure of PBLG-graft-PEG was confirmed by nuclear magnetic resonance (NMR) spectroscopy, morphology of copolymer membrane was investigated using
scanning electron microscopy (SEM), and thermal transition behavior was studied using differential scanning calorimeter (DSC).
It was revealed that PBLG-graft-PEG copolymer holds different structure and performance compared with PBLG homopolymer. The introduction of PEG chains not
only decreases the melting point of PBLG segments in PBLG-graft-PEG, but also changes the morphology of PBLG segments. Influence of grafting ratio on chemical and mechanical properties
of PBLG-graft-PEG copolymer membrane was studied. 相似文献
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《中国水稻研究通报》1997,(4)
To study the techniques of prediction of population dynamics of yellow stem borer (YSB), weused system analysis and computer techniques, regression models, and mimic models in 1987-1993. A computer system of YSB population dynamics was built for local rice region, which in-cluded 4 subsystems: i. e. database management subsystem, regression prediction subsystem,population dynamics mimic prediction subsystem, and population dynamics plotting subsystem.The system can describe the field population dynamics of YSB effectively. The regression predic-tion showed that the sources of the insects, growing systems, and meteorological factors were 相似文献
6.
Application of artificial neural network (ANN) for prediction of fabrics’ extensibility 总被引：1，自引：0，他引：1
Tomislav Rolich Anica Hursa Šajatović Daniela Zavec Pavlinić 《Fibers and Polymers》2010,11(6):917-923
In the field of clothing technology, prediction of the fabric properties is very important because the fabric is the basic element of every clothing item. Knowing the fabric properties it is possible to predict fabrics’ behaviour during process of clothing manufacturing (in phase of cutting, sewing and ironing) as well as clothing items’ behaviour during usage. According to the fabrics’ characteristics and model design it is possible to predict appearances of the clothing items and their draping which can be presented with many computer simulations. In this paper extensibility of the fabric which appears during a small forces loading on the fabrics are investigated. Loading of small forces on the fabric appears in each phases of clothing manufacturing processes and during usage of clothing items. Investigations are managed on 50 fabrics which are weaving in twill weave and 100 % wool. The basic characteristics of fabric (density of warp and weft, mass per unit area, thickness) are defined according appropriate standard methods and tensile properties in the warp and weft directions are measured using KES-FB1 measuring system. Using an artificial neural network (ANN) prediction of extensibility properties of the fabrics are done, results are compared with experimental values and deviations are determined. ANN is an adaptive system that changes its structure based on external or internal information that flows through the network during the learning phase. They can be used to model complex relationships between inputs and outputs or to find patterns in data. Based on the implemented investigations, minimal deviations between experimental and predicted values are obtained and can be concluded that ANN can be used for prediction of the fabrics properties. 相似文献
7.
Shashi Kala Yadav Salil Sehgal 《Plant foods for human nutrition (Dordrecht, Netherlands)》1995,47(2):125-131
The present investigation was conducted to study the concentration of ascorbic acid and -carotene in spinach and amaranth leaves as affected by various domestic processing and cooking methods which included storage of leaves in polythene bags or without packing for 24 and 48 hours in refrigerator at 5 °C; at 30 °C in polythene bags; drying (sun and oven); blanching (5, 10, 15 min); open pan and pressure cooking. Ascorbic acid content of fresh leaves was 624.1 to 629.0 mg and -carotene content was 35.3 to 53.1 mg/100 g dry weight. The percent loss of ascorbic acid ranged from 1.1 to 6.3 and 55.3 to 65.9 while lower losses (0.0 to 1.3 and 1.5 to 2.1) of -carotene were observed in leaves stored in refrigerator and at 30 °C, respectively. A markedly greater reduction in ascorbic acid and -carotene was observed in dried, blanched and cooked leaves. The study recommended the storage of leaves in refrigerator, drying in oven, blanching for shorter time and cooking in pressure cooker for better retention of these two vitamins. 相似文献
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《热带作物学报》2019,(12)
<正>《农业科学学报》(Journal of Integrative Agriculture,JIA)由农业农村部主管、中国农业科学院与中国农学会共同主办,是综合性英文学术期刊,月刊。JIA前身为2002年创刊的《中国农业科学》英文版(Agricultural Sciences in China,ASC),2012年更名为JIA。JIA 2006年起与Elsevier合作,全文数据在Science Direct平台面向世界发行;2009年被SCI收录,最新影响因子为1.337,位于JCR农业综合类Q2区前列位次。JIA是中国科技核心期刊;连续6年获得"中国最具国际影响力学术期刊"称 相似文献
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Xingcong Jiang Pablo Pregitzer Ewald Grosse-Wilde Heinz Breer Jürgen Krieger 《Journal of insect science (Online)》2016,16(1)
Pheromone-responsive neurons of insects not only require specific receptors but in addition several auxiliary components, including the “sensory neuron membrane protein,” SNMP. Accordingly, SNMP is considered as a marker for neurons responding to pheromones. For the desert locust Schistocerca gregaria, it is known that the behavior, including aggregation behavior and courtship inhibition, is largely controlled by pheromones. However, little is known about pheromones, their receptors, and the pheromone-responsive cells in locusts. In this study, we have identified two SNMP subtypes, SNMP1 and SNMP2, and compared their phylogenetic relationship and primary structure motifs with SNMPs from other species. Both SNMPs were found in chemosensory tissues, especially the antennae. Employing double in situ hybridization, we identified and localized the SNMP-expressing cells in the antennae. Cells expressing SNMP1 were localized to sensilla trichodea but also to sensilla basiconica, which in locust respond to pheromones. One or a few cells express SNMP1 within the multineuron clusters from sensilla basiconica, whereas the SNMP2 subtype was expressed in cells surrounding the neuron clusters, possibly supporting cells. Based on the finding that SNMP1 is expressed in distinct neurons under chemosensory sensilla, it is conceivable that these cells may represent pheromone-responsive neurons of the desert locust. 相似文献
13.
《Crop Protection》1987,6(1):28-32
IR2035-117-3 (highly resistant), ARC 10239 (resistant), and TN1 (susceptible) rice plants received one application at 40 days after transplanting (DT) or three spray applications (20, 30, and 40DT) of monocrotophos, diazinon or deltamethrin. When these plants were exposed to S. furcifera adults, either 24 hours after the single application, or 15 days after the third of the spray applications, the deltamethrin-treated were most preferred. The percentage of S. furcifera that alighted on the three varieties decreased correspondingly with an increase in the level of varietal resistance. Differences in S. furcifera population growth, nymphal survival, nymphal duration, growth index and feeding rate between IR2035-117-3 and TN1 were significant. Foliar application of deltamethrin caused a significant increase in population growth on IR2035-117-3, ARC 10239, and TN1 and an increase in the nymphal survival and growth index on TN1. 相似文献
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《中国水稻研究通报》2002,(1)
Evaluation of O. minuta for the re-sistanee to the brown planthopper(BPH), Nilaparvata lugens (Stal)was carried out by using ModifiedSeedbox Screening Technique(MSST). Based on the significantdifferences between O. minuta,E13-9, and the susceptible checkvariety, TN1, the resistance of O.minuta to BPH was determined byusing a series of resistance indices 相似文献
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《中国水稻研究通报》1997,(1)
The relation between seed viability and waterstatus in seed was studied. The experimentwas carried out at Zhongshan University.Seeds of hybrid rice Shanyou 63 were collectedfrom Guangdong Academy of Agriculture Sci-ences in 1993 and then stored for one year inopen air or with silica gel. Before and afterstorage, the relative content of free water and 相似文献
16.
Wei-Xia Wang Kai-Long Li Yang Chen Feng-Xiang Lai Qiang Fu 《Journal of insect science (Online)》2015,15(1)
The enolase [EC 4.2.1.11] is an essential enzyme in the glycolytic pathway catalyzing the conversion of 2-phosphoglycerate (2-PGE) to phosphoenolpyruvate (PEP). In this study, a full-length cDNA encoding α-enolase was cloned from rice brown planthopper (Nilaparvata lugens) and is provisionally designated as NlEno1. The cDNA sequence of NlEno1 was 1,851 bp with an open reading frame (ORF) of 1,305 bp and encoding 434 amino acids. The deduced protein shares high identity of 80–87% with ENO1-like protein from Hemiptera, Diptera, and Lepidoptera speices. The NlEno1 showed the highest mRNA expression level in hemolymph, followed by fat body, salivary gland, ovaries and egg, and showed trace mRNA levels in testis. The mRNA of NlEno1 showed up-regulated level in virulent N. lugens population Mudgo, IR56 and IR42 when compared with TN1 population. Injection of double-stranded RNA (dsRNA) of NlEno1 into the adults significantly down-regulated the NlEno1 mRNA level along with decreased eggs and offspring. Moreover, injection of NlEno1-dsRNA decreased mRNA level of Vitellogenin (Vg) gene. These results showed that the NlEno1, as a key glycolytic enzyme, may play roles in regulation of fecundity and adaptation of N. lugens to resistant rice varieties. 相似文献
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《Crop Protection》1987,6(5):341-346
The toxicities of 52 phenolic and other chemicals to the grey field slug, Deroceras reticulatum (Müller 1774) (Mollusca: Pulmonata: Limacidae) were compared in laboratory tests. Stomach-poison activity was assessed by injecting measured amounts into the gut and contact-action activity by confining crawling slugs on coated glass plates. Chemical uptake into slugs was measured from aqueous solution and from a dry glass surface. Stomach-poison activity increased generally with substitution by groups increasing lipophilicity and acidity. Uptake was related to lipophilicity when slugs were immersed in aqueous solutions but not when slugs crawled on dry deposits. An expression was derived, using water solubilities and octanol/water partition coefficients, which correctly predicted uptake from an inert surface. The implications for developing chemical control methods for slugs in the field are discussed. 相似文献
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CAO Ming-zhang SHEN Jin-liang ZHANG Jin-zhen LU Mei LIU Xiao-yu ZHOU Wei-jun 《中国水稻科学》2004,11(5-6):297-297
During 2001 and 2002, insecticide resistance in the fourth instar larvae of striped stem borer (Chilo suppressalis), which were collected from Zhejiang, Jiangsu, Anhui and Jiangxi provinces in China, was monitored using topical application method. Low level of resistance to fipronil (6.5-fold) was detected for the first time in RA (Rui’an) population from southeast Zhejiang, but the other six populations tested remained susceptible to this recently introduced insecticide. No resistance to abamectin had been found after examining six populations from Zhejiang, Jiangsu and Anhui provinces. Resistance to triazophos was monitored in ten populations from the four Provinces, and very high level resistance(163.1-fold) was found in RA population, moderate (18.2-fold) in WZ (Wenzhou, Zhejiang Province) population, and low (6.7- to 9.7-fold) in populations of CS (Changshu), XS (Xishan) and JT (Jintan) from south Jiangsu, whereas the other five populations were susceptible. All the nine populations monitored were resistant to monosultap with varying degree, i.e. high level (113.7- and 57.6-fold, respectively) of resistance in RA and YF (Yifeng, Jiangxi Province) populations, moderate (11.0- to 29.7-fold) in WZ, CS, JT and TH (Taihu, Anhui Province) populations, low (6.7- and 7.5-fold, respectively) in XY (Xinyang, Jiangsu Province) and XS populations, and the lowest (3.7-fold) in GY (Guanyun, Jiangsu Province) population. Inheritance of resistance in triazophos selected strain Rts was studied through reciprocal cross and backcross experiments. The preliminary results indicated that inheritance of triazophos resistance in Rts strain was incompletely dominant, with degrees of dominance being 0.46 and 0.68 for reciprocal crosses, and that the resistance was controlled by a major gene, though minor modifying gene(s) might be involved. 相似文献
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Almeida MR Darin JD Hernandes LC Aissa AF Chisté RC Mercadante AZ Antunes LM Bianchi ML 《Plant foods for human nutrition (Dordrecht, Netherlands)》2012,67(2):171-177
This study investigated the in vivo genotoxicity of piquiá pulp (Caryocar villosum) and its potential antigenotoxicity on doxorubicin (DXR)-induced DNA damage by comet assay and micronucleus test. In addition, the phytochemicals present in piquiá pulp were determined. Piquiá fruit pulp (75, 150 or 300?mg/kg b.w.) was administered by gavage to Wistar rats for 14?days, and the animals received an injection of saline or DXR (15?mg/kg b.w., i.p.) 24 h before they were euthanized. The phytochemical analysis revealed the presence of carotenoids; phenolic compounds, including flavonoids; tannins and α-tocopherol in piquiá pulp. No statistically significant differences were observed in the evaluated parameters, demonstrating the absence of cytotoxic and genotoxic effects of piquiá pulp at all tested doses. In liver, kidney, cardiac and bone marrow cells, piquiá significantly reduced the DNA damage induced by DXR. Our results showed that the lowest piquiá dose caused the largest decrease in DNA damage and the highest dose caused the smallest decrease, demonstrating an inverse dose-response of piquiá pulp. Furthermore, we observed a difference in the potential antigenotoxic effects in several tissues. In conclusion, our results demonstrated that piquiá pulp was not genotoxic and inhibited the genotoxicity induced by DXR, but some of the protective effects that were observed depended on the doses and experimental conditions. Therefore, further investigations are needed to clarify how piquiá pulp positively affects human health. 相似文献
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Bhadha Jehangir H. Khatiwada Raju Tootoonchi Mohsen Capasso Jay 《Paddy and Water Environment》2020,18(1):167-177
Paddy and Water Environment - In South Florida, approximately 11,000 ha of rice is grown every summer on highly organic histosols. With no added fertilizer inputs of phosphorus (P) or... 相似文献