Estimated distribution and movement of hairtail Trichiurus lepturus in the Aru Sea, based on the logbook records of trawlers     

Chao Hsiung Cheng  Tsuyoshi Kawasaki  Kuo Ping Chiang  Chuan Hung Ho 《Fisheries Science》2001,67(1):3-13

SUMMARY: The distribution and movement of the hairtail Trichiurus lepturus stock in the Aru Sea were investigated using logbook data from four Taiwanese commercial otter trawlers. Fluctuations in population size, population density index and the distribution of catch per unit effort (CPUE) and fishing effort are discussed. The CPUE data were standardized by using the generalized linear model (GLM) in which fishing month, fishing area and size category of the hairtail were taken into account. The fishing season could be divided into three episodes: aggregation between March and April, dispersion between May and June, and aggregation again between July and December. A seasonal two-peak distribution of the population size of hairtail reflects the aggregation–dispersion pattern. The first peak in May–June can be explained in terms of the hairtails' overwintering migration. The second peak in October–December is likely to be the result of spawning aggregation.  相似文献   

A putative heterozygous interchange in the cabbage (Brassica oleracea var. capitata) cultivar ‘Badger Shipper’     

B. Y. Chiang  W. F. Grant 《Euphytica》1975,24(3):581-584

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Free amino acid content in leaf and root tissues of clubroot-resistant and clubroot-susceptible cabbages     

M. S. Chiang  W. K. Nip 《Euphytica》1973,22(2):393-398

Summary Leaf and root tissues of clubroot-resistant cabbage line 8–41 and cultivar Badger Shipper, and clubroot-susceptible cultivars Penn State Ballhead and Golden Acre were analysed for free amino acid content. There was no relationship between total free amino acid content and susceptibility to the disease. Alanine and asparagine contents were higher in the leaf tissue in resistant cabbage. Tyrosine content appeared to be higher in the root tissue of the resistant plants than that of susceptible ones.  相似文献   

Transfer of resistance to race 2 of Plasmodiophora Brassicae from Brassica napus to cabbage (B. oleracea var. Capitata). I. Interspecific hybridization between B. napus and B. oleracea var. Capitata     

M. S. Chiang  B. Y. Chiang  W. F. Grant 《Euphytica》1977,26(2):319-336

Summary Interspecific hybridization between Brassica napus L. (2n=38, a₁a₁c₁c₁) and B. oleracea var. capitata L. (2x- and 4x-cabbage; 2n=2x=18, cc and 2n=4x=36, cccc) was carried out for the purpose of transferring clubroot disease resistance from the amphidiploid species to cabbage. Nineteen hybrids with three different chromosome levels (2n=28, a₁c₁c; 2n=37, a₁c₁cc and 2n=55, a₁c₁cccc) were obtained. The F₁ plants were mostly intermediate between the two parents but as the number of c genomes in the hybrids increased, the more closely the hybrids resembled the cabbage parent. All F₁ hybrids were resistant when tested against race 2 of Plasmodiophora brassicae wor. The complete dominance of resistance over susceptibility suggested that the gene(s) controlling resistance to this particular race of the clubroot pathogen is probably located on a chromosome of the a genome in Brassica.Contribution No. J654.  相似文献   

In vitro evaluation of the efficacy of a veterinary dry heat fluid warmer     

Vivian Chiang DVM  Kate Hopper PhD  BVSc  DACVECC  Matthew S. Mellema PhD  DVM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2011,21(6):639-647

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Conservation. High value and long life--double jeopardy for tunas and billfishes     

Collette BB  Carpenter KE  Polidoro BA  Juan-Jordá MJ  Boustany A  Die DJ  Elfes C  Fox W  Graves J  Harrison LR  McManus R  Minte-Vera CV  Nelson R  Restrepo V  Schratwieser J  Sun CL  Amorim A  Brick Peres M  Canales C  Cardenas G  Chang SK  Chiang WC  de Oliveira Leite N  Harwell H  Lessa R  Fredou FL  Oxenford HA  Serra R  Shao KT  Sumaila R  Wang SP  Watson R  Yáñez E 《Science (New York, N.Y.)》2011,333(6040):291-292

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A cocoon of freshly accelerated cosmic rays detected by Fermi in the Cygnus superbubble     

Ackermann M  Ajello M  Allafort A  Baldini L  Ballet J  Barbiellini G  Bastieri D  Belfiore A  Bellazzini R  Berenji B  Blandford RD  Bloom ED  Bonamente E  Borgland AW  Bottacini E  Brigida M  Bruel P  Buehler R  Buson S  Caliandro GA  Cameron RA  Caraveo PA  Casandjian JM  Cecchi C  Chekhtman A  Cheung CC  Chiang J  Ciprini S  Claus R  Cohen-Tanugi J  de Angelis A  de Palma F  Dermer CD  do Couto E Silva E  Drell PS  Dumora D  Favuzzi C  Fegan SJ  Focke WB  Fortin P  Fukazawa Y  Fusco P  Gargano F  Germani S  Giglietto N  Giordano F 《Science (New York, N.Y.)》2011,334(6059):1103-1107

The origin of Galactic cosmic rays is a century-long puzzle. Indirect evidence points to their acceleration by supernova shockwaves, but we know little of their escape from the shock and their evolution through the turbulent medium surrounding massive stars. Gamma rays can probe their spreading through the ambient gas and radiation fields. The Fermi Large Area Telescope (LAT) has observed the star-forming region of Cygnus X. The 1- to 100-gigaelectronvolt images reveal a 50-parsec-wide cocoon of freshly accelerated cosmic rays that flood the cavities carved by the stellar winds and ionization fronts from young stellar clusters. It provides an example to study the youth of cosmic rays in a superbubble environment before they merge into the older Galactic population.  相似文献   

Extract of lotus leaf ( Nelumbo nucifera ) and its active constituent catechin with insulin secretagogue activity     

Huang CF  Chen YW  Yang CY  Lin HY  Way TD  Chiang W  Liu SH 《Journal of agricultural and food chemistry》2011,59(4):1087-1094

The effect of lotus leaf ( Nelumbo nucifera Gaertn.) on diabetes is unclear. We hypothesized that lotus leaf can regulate insulin secretion and blood glucose levels. The in vitro and in vivo effects of lotus leaf methanolic extract (NNE) on insulin secretion and hyperglycemia were investigated. NNE increased insulin secretion from β cells (HIT-T15) and human islets. NNE enhanced the intracellular calcium levels in β cells. NNE could also enhance phosphorylation of extracellular signal-regulated protein kinases (ERK)1/2 and protein kinase C (PKC), which could be reversed by a PKC inhibitor. The in vivo studies showed that NNE possesses the ability to regulate blood glucose levels in fasted normal mice and high-fat-diet-induced diabetic mice. Furthermore, the in vitro and in vivo effects of the active constituents of NNE, quercetin, and catechin, on glucose-induced insulin secretion and blood glucose regulation were evaluated. Quercetin did not affect insulin secretion, but catechin significantly and dose-dependently enhanced insulin secretion. Orally administered catechin significantly reversed the glucose intolerance in high-fat-diet-induced diabetic mice. These findings suggest that NNE and its active constituent catechin are useful in the control of hyperglycemia in non-insulin-dependent diabetes mellitus through their action as insulin secretagogues.  相似文献   

內蒙及察北蒙古羊杂交改良研究报告第三号——五一牧場杂交兩代結果     

蔣英  湯逸人  潘君乾  崔重九  张世勤  鄒道訓 《中国农业大学学报》1959,(1):41-48

五一牧場位于察哈尔盟(現已併入錫林郭勒盟)的东南部,东經116°,北續48°,海拔1,500公尺以上,面积約有60,000公頃。場境内有閃电河、黑风河和羊腸子河。全場有放牧地44,944公頃,打草地3,000公頃,耕地面积約3,000公頃。根据多倫气象站1955年測定的气象材料、年平均温度1.76℃,最高温度35.4℃,最低温度-33.4℃,冬季时間漫長,全年有五个月的平均温度在零下。年降水量429.5毫米,蒸发量1,507.8毫米,风向多为西北风,全年无霜期105天。适于当地种植的作物有燕麦、莜麦、豌豆、粟、蕎麦和馬鈴薯等。該場屬于干旱草原,按自然情况划分牧場。冬季春季牧場为沙窩地区,屬砂質土壤。夏季牧場为平原地区,屬粘質壤土,带硷性,牧草以禾本科为最多。平原地区多为硷草,沙窩地区为沙丘草,一般草高40厘米,每公頃产下草約750公斤。  相似文献   

Methylation increases sodium transport into A6 apical membrane vesicles: possible mode of aldosterone action   总被引：7，自引：0，他引：7  

S Sariban-Sohraby  M Burg  W P Wiesmann  P K Chiang  J P Johnson 《Science (New York, N.Y.)》1984,225(4663):745-746

When isolated apical membrane vesicles prepared from cultured A6 epithelia were incubated in vitro with the methyl donor S-adenosylmethionine, the control rate of amiloride-inhibitable sodium transport was doubled. The methylation inhibitors 3-deazaadenosine and S-adenosyl homocysteine returned the S-adenosyl-methionine-stimulated sodium transport to control levels. Neither these agents nor adenosine affected sodium transport into control vesicles. In vesicles incubated with S-adenosyl-[3H-methyl]methionine, both membrane phospholipids and proteins were labeled, and this labeling was inhibited by deazaadenosine. In vesicles prepared from A6 cells treated with aldosterone, sodium transport was twice the control value and S-adenosylmethionine did not cause any further stimulation of transport. In those vesicles, both lipid and protein methylation were increased. These results suggest that methylation, which increases the rate of amiloride-sensitive sodium transport is involved in the action of aldosterone at the apical membrane level in epithelia.  相似文献