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11.
Different responses of protein synthesis to refeeding in various muscles of fasted chicks 总被引：1，自引：0，他引：1
1. The change in the rate of protein synthesis of different muscles, concentrations of plasma insulin, plasma insulin-like growth factor-I (IGF-I) and other plasma components were investigated after refeeding in fasted chicks. 5.2 g of the complete diet was refed. This was the maximum that could be force-fed with water. 2. The fractional synthesis rates (FSR) of breast (M. pectoralis major) and leg (M. gastrocnemius) muscles were measured after injection of L-[2, 6-(3)H]phenylalanine. Plasma insulin and IGF-I concentration were determined by radioimmunoassay. 3. In the breast muscle, FSR was significantly reduced by 2-d fasting. The FSR had recovered completely after 1 h of refeeding and was maintained until 6 h. The change in FSR after refeeding was associated with the change in ribosomal efficiency (K(RNA); absolute synthesis rate per unit RNA), while no change in ribosomal capacity (C(S); RNA: protein ratio) was observed. 4. In the leg muscle, FSR was decreased by 2-d fasting and increased gradually toward 6 h after refeeding but did not reach the level of the fed control. In contrast to the breast muscle, no significant changes in Cs and K(RNA) in the leg muscle were observed. 5. Plasma glucose concentration increased significantly at 1 h after refeeding but returned to the fasted level after 24 h. Plasma insulin concentration in chicks refed for 1 h was higher than in the fasted group. There was no significant change in plasma IGF-I concentration. 6. These results suggest that the FSR of breast muscle was more sensitive to refeeding than that of leg muscle which may be explained, in part, by differences in sensitivity to the change in circulating plasma insulin concentration after refeeding. 相似文献
12.
Ibrahim Abu Yaman 《Journal of pest science》1965,38(5):65-69
Zusammenfassung 1. Die Spinnmilbenpopulation war von Anfang Oktober bis Anfang Ende Januar gering. Während dieser Zeit haben sie das Wachstum und Produktion der Pflanzen nicht sonderlich beeinflußt. Danach stieg ihre Zahl schlagartig und rief Schaden unter den Aubergine-Pflanzen hervor.2. Wir halten die Temperatur für den Hauptfaktor für den Anstieg und Abfall der Spinnmilbenpopulation. Niederschläge haben geringen Einfluß.3. Die Spinnmilben werden bereits bei Temperaturen von 13,4–15°C aktiv. Die Aktivität nimmt mit dem Temperaturanstieg zu und die Milbenzahl erreicht einen Gipfel bei etwa 21°C. Weiter ansteigende Temperatur bewirkt einen Abfall der Anzahl.4. Im Sommer werden keine Spinnmilben gefunden.5. Bei leichtem Befall werden die Spinnmilben an den unteren Blatteilen gefunden, bei schwerem Befall aber auch an der oberen Blattoberfläche.6. Kelthane und Tedion sind die besten Bekämpfungsmittel gegen die Spinnmilbe.7. Organische Phosphorverbindungen ermöglichen einen Anstieg der Spinnmilbenpopulation, wahrscheinlich durch das Abtöten ihrer natürlichen Feinde, und die Milben werden resistent gegen ihre Wirkung.
Der Schreiber möchte Seiner Excellenz, dem Minister für Landwirtschaft, für sein besonderes Interesse und seine Ermutigung Dank sagen; ebenso dem herrn Direktor der wissenschaftlichen Abteilung für das Bereitstellen aller während der Untersuchungen benötigten Einrichtungen. Besonderer Dank gebührt Herrn A. Arafat für das Sammeln der Daten.Dank möchte ich auch dem Superintendenten der Fara'a Versuchs-Station sagen, welcher mir das Material, Geräte und Labor zur Verfügung stellte, und allen Mitarbeitern, die niemals ihre Hilfe versagten, wenn sie darum gebeten wurden. 相似文献
Conclusion 1. Spider mite populations were very small at the beginning of October and until the end of January. During that time they had no harmful effect on plant growth and production. After that date their numbers increased strikingly and caused damage to the eggplants.2. We consider temperature as the major factor influencing the increase and decrease in spider mite populations. Precipitation has little effect.3. Spider mites become active and reproduce already at mean temperatures of 13,4–15°C. The activity increases with the increase in temperature and the numbers reached the peak at mean temperature of 21°C. Further increase in temperature caused the decrease in numbers.4. Spider mites are not found in summer.5. Spider mite is found on the lower surface of the leaf when infestation is light, but also on the upper surface when infestation is severe.6. Kelthane and Tedion give the best control of the spider mite.7. The organo-phosphorous compounds allow increase of spider mite populations, probably by killing its natural enemies, and the mites developing resistance against their effect.
Der Schreiber möchte Seiner Excellenz, dem Minister für Landwirtschaft, für sein besonderes Interesse und seine Ermutigung Dank sagen; ebenso dem herrn Direktor der wissenschaftlichen Abteilung für das Bereitstellen aller während der Untersuchungen benötigten Einrichtungen. Besonderer Dank gebührt Herrn A. Arafat für das Sammeln der Daten.Dank möchte ich auch dem Superintendenten der Fara'a Versuchs-Station sagen, welcher mir das Material, Geräte und Labor zur Verfügung stellte, und allen Mitarbeitern, die niemals ihre Hilfe versagten, wenn sie darum gebeten wurden. 相似文献
13.
为揭示南方红壤侵蚀区不同郁闭度马尾松林水土流失的规律,以长汀红壤侵蚀区不同郁闭度(0.2,0.4,0.6,0.8)马尾松林为研究对象,采用标准径流小区观测的方法,利用在2015年观测的37场自然降雨事件构成一个降雨梯度,分析不同郁闭度马尾松林水土流失随降雨等级的变化规律,以及产流产沙量与降雨因子之间的相关性。结果表明:(1)不同郁闭度马尾松林产流产沙量均随降雨等级的增加呈逐渐增大的趋势,且暴雨下增加更为明显;(2)在中雨、大雨和暴雨3种降雨等级下,郁闭度0.2和0.8马尾松林产流产沙量均高于郁闭度0.4和0.6,且郁闭度0.4和0.6马尾松林产流产沙量随降雨等级增加变化较小;(3)在自然降雨梯度下,不同郁闭度马尾松林产流产沙与降雨量和降雨侵蚀力显著相关(P<0.05);(4)逐步回归分析发现,不同郁闭度马尾松林产流回归方程的主要变量是降雨量和最大30 min雨强,而产沙回归方程的主要变量是降雨量和降雨侵蚀力。综上,马尾松林郁闭度过高或过低不利于水土保持,长汀红壤侵蚀区郁闭度0.6马尾松林防治水土流失效果最佳。 相似文献
14.
Immunohistochemical study on localization of serotonin immunoreactive cells in the gastrointestinal tract of the European catfish (Silurus glanis,L.) 
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下载免费PDF全文 In this study, it was aimed to identify the distribution of serotonin immunoreactive cells within the gastrointestinal tract (GIT) of European catfish (Silurus glanis). For this purpose, the tissue samples were taken from the stomach (cardia, fundus and pylorus region) and intestine (anterior, middle and posterior region). They were examined by applying the avidin‐biotin‐immunoperoxidase method. The serotonin containing immunoreactive cells are presented in all regions of the GIT. It was determined to be localized generally in different distribution within the stomachs and intestines of S. glanis. It was found that the most intensive regions of immunoreactive cells were the cardia stomach and posterior of intestine. 相似文献
15.
I. K. Abu Yaman 《Journal of pest science》1967,40(10):154-156
Zusammenfassung
Th. wilkinsoni Tams wurde nur in den Gebieten von Jerusalem und Ramallah gefunden. Wenn er auch als Sch?dling an allen Kiefernarten auftritt,
wurde dochP. halepensis Mill. am st?rksten befallen. Es tritt j?hrlich nur eine Generation auf. Die Imagines schlüpfen von Mitte August bis Mitte
November. Die Eiablage findet von Anfang September bis Mitte Dezember statt. Es gibt 5 Raupenstadien. Die Raupen erscheinen
Mitte Oktober und werden bis Mitte April gefunden. In allen Stadien findet Verpuppung im Gespinst statt. Die Verpuppung beginnt
um Mitte M?rz und dauert bis Mitte November.Pinus brutia Ten., die weniger stark von dem Insekt befallen wird, wird für die Aufforstung im Befallsgebiet vorgeschlagen. Der Autor
h?lt mechanische Bek?mpfung bei einem beschr? nkten Grad des Befalls durch Zerst?rung der Gespinste durch organisiertes Vorgehen
für m?glich.
Summary Thoumetopoea wilkinsoni Tams was found to be restricted only to Jerusalem and Ramallah areas in Jordan. Although it was found to attack all species of pine, butPinus halepensis Mill. was the most important pine affected there were only one generation of the insect per year. The adult was seen emerged from the middle of August to the middle of November. Oviposition was found to take place from the beginning of September to the middle of December. There were 5 larval insects. The hatchlings appeared on the middle of October, the larvae were found until the middle of April, Ecdysis took place within the nest in all instars. Pupation commenced about the middle of March and pupae were found until the middle of November.Pinus brutia. Ten. being less affected by the insect, is highly recommended for re-afforestation in infested areas. The anthor considers mechanical control possible, at this limited stage of infestation, by destroying the insect nests through an organized campaign.相似文献
16.
In this study, the prevalence and distribution of various Arcobacter spp. were investigated in samples taken from the cloacae of healthy domestic geese raised in Turkey. A membrane filtration technique with a non-selective blood agar was employed after enrichment in Arcobacter enrichment broth (AEB) to isolate a wide range of Arcobacter spp. In addition, the isolates were characterized phenotypically and identified at species level using a multiplex-PCR assay. A total of 90 cloacal swab samples taken from geese, collected on three farms (18, 25, 47 samples, respectively), were examined. Of the samples examined, 16 (18%) were found positive for Arcobacter. One Arcobacter species was isolated from each bird. Of the 16 Arcobacter isolates, 7 (44%), 7 (44%) and 2 (12.5%) were identified by m-PCR as A. cryaerophilus, A. skirrowii and A. butzleri, respectively. The present study indicates that domestic geese can harbour a variety of Arcobacter spp. in their cloacae. The presence of Arcobacter in geese may be of significance as reservoirs in their dissemination. Detailed research is needed for better understanding of the epidemiology and zoonotic potential of this emerging pathogen. 相似文献
17.
Necla Yaman 《Fibers and Polymers》2009,10(4):413-418
Organic-inorganic hybrid coatings containing phosphoric acid (PA) bonded to the organic-inorganic network were prepared from
tetraethoxysilane (TEOS) using a sol-gel process. The effect of sol-gel phosphate-based flame retardant coating on polyacrylonitrile
fabric properties (flammability, stiffness, and strength) was investigated. Sample characterization of the coated samples
were investigated using differential thermal/thermogravimetric analysis (DTA/TGA), Fourier transform infrared spectroscopy
(FTIR), X-ray diffractometer (XRD), and scanning electron microscopy (SEM). The results showed that hybrid coating on the
polyacrylonitrile fabrics influenced fabric stiffness, strength, and flammability. And also, flammability of the coated samples
after washing cycles was investigated, and the flame retardancy properties of the samples after 10 repeated washings were
not completely lost. 相似文献
18.
In the present study we describe a Nosema infection in a Phyllotreta nigripens population. The parasite was identified as Nosema phyllotretae. The spores are oval, 3.97±0.47 μm (2.85–4.75) in length and 2.19±0.36 μm (1.90–2.85) in width. The polar filament has commonly
14 coils. The spore wall is 138–200 nm thick and made up of a clear endospore (88–140 nm) and a uniform exospore (40–70 nm).
The polar filament measures 100–125 nm in diameter in the mature spirals. The polaroplast is thin lamellar. This study presents
P. nigripens as a new host for N. phyllotretae and a second infection locality in Turkey. 相似文献
19.
Cengiz ATASOGLU Ismail Yaman YURTMAN Türker SAVAS Mustafa GÜLTEPE Ömer ÖZCAN 《Animal Science Journal》2008,79(4):435-442
This study aimed at investigating the effects of weaning kids abruptly at an average of 55 ± 13 days of age on intake, behavioral and serum parameters and, lasted for a total of six weeks; two weeks pre-weaning and four weeks post-weaning. Sixteen single kids with equal gender were used. Kids were only allowed to stay with their mothers for suckling (45 min/period) both in the morning and in the evening period during pre-weaning. Grower concentrate and hay were offered ad libitum . The duration of the study was divided into three periods for the sampling of behavioral and serum parameters; (i) pre-weaning period lasting for two weeks (P-BW) (ii) early post-weaning period lasting for one week (P-AW1) and (iii) late post-weaning period lasting for three weeks (P-AW2). Daily weight gain of kids gradually decreased as the observation period progressed ( P = 0.001). However concentrate feed intake increased from 0.154 kg/day in P-BW to 0.479 kg/day in P-AW1 and 0.499 kg/day in P-AW2. Water intake, rumination and standing behaviors decreased in P-AW2 ( P < 0.001), whereas activity towards concentrate feed (CF) ( P < 0.001) and roughage ( P = 0.012) increased as compared to P-BW and P-AW1. Abnormal oral activity was not affected by the periods ( P = 0.906). CF was significantly higher in females ( P = 0.003), whereas males displayed higher lying behavior ( P = 0.007). Glucose, total protein, urea, cholesterol, HDL-cholesterol, LDL-cholesterol concentrations ( P = 0.001) and ALP activity ( P = 0.003) were significantly affected by the periods. The results of the present study suggest that behavioral and serum parameters across the periods describe changes in the nutritional conditions as a result of the transition from milk to solid feed in association with weaning. 相似文献
20.
Xianai Huang Duygu Kocaefe Yasar Kocaefe Yaman Boluk Andre Pichette 《Wood Science and Technology》2012,46(6):1215-1237
Effect of artificial weathering on the wettability of three heat-treated North American wood species (jack pine, aspen, and birch) is studied from the point of view of the structural and chemical changes taking place on the wood surface. Weathering increases wettability of all three heat-treated woods by water. Changes in wettability during artificial weathering differ according to heat treatment procedure and wood species and are likely due to combination of structural and chemical changes of the surfaces. Scanning electron microscopic analysis indicates that cracks form due to degradation taking place during weathering. As a result, water has easier entry into the cell wall, which consequently increases wettability. IR spectra suggest that the OH/CH2 ratio for heat-treated specimens is inversely proportional to the contact angle regardless of the type of wood species. The presence of cellulose-rich layer on wood surface and increasing amount of amorphous cellulose transformed from crystallized cellulose due to weathering result in increase in hydroxyl; consequently, it increases heat-treated wood wettability. 相似文献