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101.
It is a widely accepted observation that many older Hong Kong residents have lived periodically on the Chinese mainland since
the relaxation of restrictions on cross-border mobility and the closer connection between Hong Kong and the mainland. This
paper explores and compares the determinants of various modes of residential mobility by Hong Kong retirees to the Pearl River
Delta based on the data of two samples—one from Hong Kong and the other from the mainland. The findings support those of studies
in Western societies that the decision of elderly residential mobility can be effectively predicted by the personal attributes,
place ties, and person ties of the retirees, and that the effects of these factors vary with different modes of retiree mobility.
The implications of these findings for the formulation of migration and housing policies for the older population and the
economic development of amenity communities are discussed.
He is also a Research Associate at the Joint Centre of Excellence for Research on Immigration and Settlement in Toronto, Canada.
His research interests are elderly residential mobility, gerontology and geriatrics education, and the help-seeking behavior
of older people. Dr. Ma’s latest study concerns the utilization and accessibility of human services for older residents in
Hong Kong.
He is also a reviewer of several international journals. Dr. Chow’s research interests are social security policies and practice,
social policies and services for older people, and family support. The focus of his latest research project is the service
needs of new immigrants to Hong Kong. 相似文献
102.
Triploid origin of the gibel carp as revealed by 5S rDNA localization and chromosome painting 总被引:2,自引:0,他引:2
5S ribosomal DNA (rDNA) was isolated and sequenced from the gibel carp Carassius auratus gibelio with 162 chromosomes and crucian carp Carassius auratus with 100 chromosomes, and fluorescent probes for chromosome localization were prepared to ascertain the ploidy origin and
evolutionary relationship between the two species. Using fluorescence in-situ hybridization (FISH), major 5S rDNA signals were localized to the short arms of three subtelocentric chromosomes in the gibel
carp and to the short arms of two subtelocentrics in the crucian carp. In addition, some minor signals were detected on other
chromosomes of both species. Simultaneously, six chromosomes were microdissected from the gibel carp metaphase spreads using
glass needles, and the isolated chromosomes were amplified in vitro by degenerate oligonucleotide primed-polymerase chain reaction (DOP-PCR). Significantly, when the DOP-PCR-generated probes
prepared from each single chromosome were hybridized, three same-sized chromosomes were painted in each gibel carp metaphase,
whereas only two painted chromosomes were observed in each crucian carp metaphase spread. The data indicate that gibel carp
is of triploid origin in comparison with diploid crucian carp. 相似文献
103.
当男性在社会生产中的地位日趋重要,并且人们开始将生殖与男性相联系时,男阴便受到崇拜,古人常以鸟作为男性生殖器的像征,这或许是因为鸟头和颈具有与男性生殖器有相似的伸缩功能的缘故, 相似文献
104.
105.
本文报道以叙利亚地鼠胚胎(SHE)细胞和Wistar大鼠胚胎(WRE)细胞为靶细胞,运用体外姊妹染色单体交换试验、染色体畸变分析试验和微核试验检测哈萨克族(哈族)常用食品——烟熏肉和酸奶疙瘩对染色体的损伤作用。结果显示,烟熏肉和霉变酸奶疙瘩提取物均可明显增加SHE细胞姊妹染色单体交换频率和微核率,霉变酸奶疙瘩提取物亦可以使WRE细胞微核率显著升高(P<0.05);烟熏肉提取物还可明显诱导SHE细胞染色体畸变(P<0.05)。提示烟熏肉、霉变酸奶疙瘩中含有诱发动物细胞DNA损伤的致突变物质。 相似文献
106.
目的 :检测脑血管性痴呆患者血清中可溶性白细胞介素 - 2 (s IL- 2 R)水平 ,评价 s IL- 2 R的测定在诊治脑血管性痴呆中的价值。方法 :采用双抗体夹心的 EL ISA法检测脑血管性痴呆患者血清中 s IL- 2 R的水平。结果 :脑血管性痴呆患者血清中的 s IL- 2 R水平较健康对照组显著增高 ,两组比较差异非常显著 (P <0 .0 1)。结论 :检测脑血管性痴呆患者血清中 s IL- 2 R水平 ,有助于了解患者的免疫功能变化及疗效观察 相似文献
107.
Rectus sheath haematoma is a well‐documented but unusual cause of acute abdomen. Combination of clinical features and appropriate radiological investigations can make for a prompt diagnosis. Most authors advocate conservative management and it has been reported that patients were directly discharged from the emergency department. We report a case of rectus sheath haematoma which progressed with clinical deterioration and necessitated surgical intervention for clot evacuation. Causes, physical signs, radiological features and classification of rectus sheath haematoma are discussed. It may be necessary to continue close clinical monitoring after diagnosis of rectus sheath haematoma. 相似文献
108.
目的:确定在单纯2型糖尿病患者中亚临床动脉粥样硬化和心肌缺血的患病率和临床预测因素,并评价其与近期临床预后的关系。方法和结果:以501例无心血管疾病史的无症状2型糖尿病患者(年龄53±8岁,61%为男性)为研究对象,前瞻性检测受试者的已知危险因素和冠状动脉钙化(CAC)评分。所有CAC评分>100Agatston单位(AU)的患者(n=127)以及CAC≤100AU患者中的随机抽样(n=53),接受心肌灌注成像(M PS)检查。46.3%的患者有明显的CAC(>10AU)。在中位期为2.2年的随访(IQR1.9~2.5)中,共发生20例次事件,分别为2例冠状动脉性死亡、9例非致死性心肌梗… 相似文献
109.
J. F. Wang M. Wang J. L. Ma L. G. Jiao X. Y. Zhou J. E. Lindberg 《Transboundary and Emerging Diseases》2006,53(3):113-118
Ten multiparous lactating sows were used to investigate whether intramammary infusion of lipopolysaccharides (LPS; Escherichia coli 0111:B4; 2.0 μg/kg of body weight) would affect the circulating concentrations of Ca, P, 25‐hydroxyvitamin D (25‐OHD), tumour necrosis factor‐α (TNF‐α), interleukin‐6 (IL‐6) and cortisol. The sows were randomly allotted to either control group (control) or LPS‐treated group with five individuals per group and were infused with either physiological saline solution or LPS solution. The rectal temperature and udder quarter appearance were recorded at 0 (just before infusion), 1, 3, 7, 12 or 24 h after infusion. Blood samples were taken at 0, 1, 3, 7, 12 or 24 h after infusion. Before infusion, the rectal temperatures of all sows were below 39.2°C. At 3 and 7 h after infusion, the sows in the LPS group had a rectal temperature over 39.4°C. At 24 h after infusion, the rectal temperatures returned to pre‐infusion levels. Serum Ca and P concentrations in the LPS group decreased (P < 0.05) after LPS infusion compared with the control group at 1 h after infusion. No significant differences (P > 0.05) in the concentrations of 25‐OHD were observed between groups control and LPS at any sampling time. Increased (P < 0.01) concentrations of serum TNF‐α, IL‐6 and cortisol were observed in the LPS group compared with the control group at 3 and 7 h after infusion respectively. In conclusion, the elevation of serum concentrations of TNF‐α, IL‐6 and cortisol and the alterations of circulating concentrations of Ca and P following LPS infusion indicate that the immune system has been activated and immune activation may affect macromineral homeostatic regulation, which might have important implications for metabolic health of lactating sows. Lowered serum Ca and P following immune activation also shows a causative mechanism whereby immune activation increases the risk of secondary disorders such as mastitis‐metritis‐agalactia syndrome. However, immune activation did not affect circulating concentrations of vitamin D metabolites. 相似文献
110.
马玉国 《中华实用中西医杂志》2006,19(3):272-272
生殖器疱疹是性传播疾病。因容易复发,尚无根治之法,我们用中西医结合治疗方法治疗生殖器疱疹,并与西药作对照,取得了一定的疗效。现报告如下: 相似文献