Objectives Bai Ku Yao(White-trousers Yaos)is a special branch of Yao minority in China.They are now living in both Lihu and Baxu villages,Nandan County, Guangxi,China.The population size is about 30,000.The special cu...Objectives Bai Ku Yao(White-trousers Yaos)is a special branch of Yao minority in China.They are now living in both Lihu and Baxu villages,Nandan County, Guangxi,China.The population size is about 30,000.The special customs and culture of Bai Ku Yao,including their special clothing,intra-ethnic marriages and alcohol intake are still completely conserved to the present day.In previous epidemiologic studies,we found that the serum lipid levels and the prevalence of hyperlipidaemia were lower in Bai Ku Yao than in Han Chinese from the same region.This ethnic difference in serum lipid profiles is still not well known.We hypothesized that there may be significant differences in some genetic polymorphismsssociation of low density lipoprotein receptor (LDL-R) genepolymorphism and several environmental factors with serum lipid levels in the Guangxi Bai Ku Yao and Han populations.Methods A total of 1024 subjects of Bai Ku Yao and 792 participants of Han Chinese were stud- ied by a stratified randomized cluster sampling.Epidemiological survey was carried out using internationally standardized methods.Information on demographics,socioeconomic status, and lifestyle factors was collected with standardized questionnaires. The height,weight,waist circumference,blood pressure, and serum total cholesterol(TC),triglyceride(TG), high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C),apolipoprotein(Apo) A1, and ApoB were measured.Body massindex(BMI,kg/m2) was calculated.Genotyping of the LDL-RAvaⅡwas performed by polymerse chain reaction and restriction fragment length polymorphism combined with gel electrophoresis,and then confirmed by direct sequencing.Results(l)The height,weight,serum TC,HDL-C,LDL-C,ApoAl levels and the ratio of ApoAl to ApoB were lower in Bai Ku Yao than in Han Chinese(P【0.01 for all),whereas the percentage of subjects who consumed alcohol or smoked cigarettes was higher in Bai Ku Yao than in Han Chinese(P【0.01 for each).(2) The frequency of A+ allele in Bai Ku Yao was 34.5%,and the frequencies of A-A-,A-A+ and A+A + genotypes were 42.6%,45.9%and 11.5%;respectively. The frequency of A+ allele in Han Chinese was 19.3%(P【0.001),and the frequencies of A-A-,A-A + and A+A+ genotypes were 64.9%,31.6%and 3.5%(P【0.001);respectively. The frequencies of A-A-,A-A+ and A+A+ genotypes in Bai Ku Yao were significant difference between males and females,between normal TC and high TC subgroup, and between normal LDL-C and high LDL-C subgroup (P【0.05 for all),whereas the frequencies of A- and A+ ? alleles in Han Chinese were significant difference between males and females(P【0.05).(3) Serum LDL-C levels in Bai Ku Yao were significant difference among the A-A-, A-A+ and A+A+ genotypes(P【0.05),the A+ carriers had higher serum LDL-C levels.Serum HDL-C levels in Han Chiese were significant difference among the A-A-,A-A + and A+A+ genotypes(P【0.01),the A+ carriers had higher serum HDL-C levels.(4) After adjusting other factors,the prevalence of LDL-C abnormality was still higher in Han Chiese than in Bai Ku Yao.The prevalence of TC abnormality in Han Chinese was almost twice high as in Bai Ku Yao. The age and diet were common risk factor for TC abnormality. No effect of AvaⅡgenotype or alcohol consumption on the TC abnormality was found,but the combination of geno-type and alcohol consumption can increase the prevalence of TC abnormality[Exp(B) =(1.154)].Age was negatively cor- related with TG level.Conclusions Serum TC and LDL-C levels were lower in Bai Ku Yao than in Han Chinese.There were significant differences in the AvaⅡallele and genotype frequencies between the he A+ carriers in Bai Ku Yao had higher serum LDL-C levels,whereas the A+ carriers in Han had higher serum HDL-C levels.Interactions between alcohol consumption or cigarette smoking and the LDL-R AvaⅡgenotype were also observed.The differences in the serum lipid profiles between the two ethnic groups might partly result from different genotypic frequency of LDL-R AvaⅡpolymorphism or differentgene-enviromental interactions.Bai Ku Yao and Han population,the frequency of A + allele was higher in Bai Ku Yao than in Han.T between the two ethnic groups.Therefore,the aim of the present study was to detect the展开更多
目的分析甲状腺结节发生与糖脂代谢水平的相关性。方法选取厦门弘爱医院(2022年1—12月)接受甲状腺检查者100例,根据患者的检查结果不同分组,其中检查结果为甲状腺结节的患者50例为研究组,检查结果为未发生甲状腺结节的患者50例为对照...目的分析甲状腺结节发生与糖脂代谢水平的相关性。方法选取厦门弘爱医院(2022年1—12月)接受甲状腺检查者100例,根据患者的检查结果不同分组,其中检查结果为甲状腺结节的患者50例为研究组,检查结果为未发生甲状腺结节的患者50例为对照组。分析患者的基础资料,明确甲状腺结节发生与糖脂代谢水平[空腹血糖(fasting plasma glucose,FPG)、总胆固醇(total cholesterol,TC)、三酰甘油(triglyceride,TG)、低密度脂蛋白胆固醇(low density lipoprotein cholesterol,LDL-C)及高密度脂蛋白胆固醇(high density lipid-cholesterol,HDL-C)]的相关性。结果研究组FPG、TC、TG和LDL-C水平较对照组更高,差异有统计学意义(P<0.05)。而在HDL-C指标相比之下,差异无统计学意义(P>0.05)。因FT3、FT4、TSH均有不确定值为等级资料行Spearman秩相关分析。TSH与FPG、TC、LDL-C、HDL-C均呈正相关(r值分别为0.105、0.635、0.143、0.704、0.619,P<0.01),而FT3与FPG、TC、LDL-C、HDL-C均呈负相关(r值分别为-0.568、-0.676、-0.352、-0.702、-0.764,P<0.01),FT4与FPG、TC、LDL-C、HDL-C均呈负相关(r值分别为-0.401、-0.547、-0.425、-0.639、-0.493,P<0.01)。结论血清FPG、TC、TG、LDL-C升高,HDL-C降低,为甲状腺结节诱发因素。展开更多
In this paper, we focus on the design of irregular QC-LDPC code based multi-level coded modulation(MLCM) scheme by jointly optimizing the component code rate and the degree distribution of the irregular QC-LDPC compon...In this paper, we focus on the design of irregular QC-LDPC code based multi-level coded modulation(MLCM) scheme by jointly optimizing the component code rate and the degree distribution of the irregular QC-LDPC component code. Firstly, the sub-channel capacities of MLCM systems is analyzed and discussed, based on which the optimal component code rate can be obtained. Secondly, an extrinsic information transfer chart based two-stage searching algorithm is proposed to find the good irregular QC-LDPC code ensembles with optimal component code rates for their corresponding sub-channels. Finally, by constructing the irregular QC-LDPC component codes from the designed ensembles with the aim of possibly enlarging the girth and reducing the number of the shortest cycles, the designed irregular QC-LDPC code based 16QAM and 64QAM MLCM systems can achieve 0.4 dB and 1.2 dB net coding gain, respectively, compared with the recently proposed regular QC-LDPC code based 16QAM and 64QAM MLCM systems.展开更多
QLC（Quad-Level Cell） NAND flash will be one of the future technologies for next generation memory chip after three-dimensional（3D） TLC（Triple-Level Cell） stacked NAND flash. In QLC device, data errors will easil...QLC（Quad-Level Cell） NAND flash will be one of the future technologies for next generation memory chip after three-dimensional（3D） TLC（Triple-Level Cell） stacked NAND flash. In QLC device, data errors will easily occur because of 2~4 data levels in the limited voltage range. This paper studies QLC NAND technology which is 4 bits per cell. QLC programming methods based on 16 voltage levels and reading method based on ＂half-change＂ Gray coding are researched. Because of the probable error impact of QLC NAND cell＇s voltage change, the solution of generating the soft information after XOR（exclusive OR） the soft bits by internal read mechanism is presented for Low-Density Parity-Check（LDPC） Belief Propagation（BP） decoding in QLC design for its system level application.展开更多
目的:观察益气养阴活血汤对冠状动脉粥样硬化性心脏病介入治疗术后患者血脂水平的影响。方法:选取2014年2月至2016年4月本院收治入院的行介入治疗的冠状动脉粥样硬化性心脏病患者80例,随机分为对照组和治疗组,每组各40例。对照组给予瑞...目的:观察益气养阴活血汤对冠状动脉粥样硬化性心脏病介入治疗术后患者血脂水平的影响。方法:选取2014年2月至2016年4月本院收治入院的行介入治疗的冠状动脉粥样硬化性心脏病患者80例,随机分为对照组和治疗组,每组各40例。对照组给予瑞舒伐他汀,治疗组在对照组的基础上联合益气养阴活血汤。观察两组患者治疗前后血脂水平[三酰甘油(three acyl glycerol,TG)、总胆固醇(total cholesterol,TC)、高密度脂蛋白(high density lipoprotein,HDL)及低密度脂蛋白(low density lipoprotein,LDL)]变化、心脏缺血事件发生情况及不良反应情况。结果:两组患者治疗后TC及LDL-C水平低于治疗前,且治疗组低于对照组,差异具有统计学意义(P<0.05)。对照组心脏缺血发生率为45.0%,治疗组心脏缺血发生率为10.0%,两组患者心脏缺血发生率比较,差异具有统计学意义(P<0.05)。对照组不良反应发生率为5.0%,治疗组不良反应发生率为27.5%,两组患者不良反应发生率比较,差异具有统计学意义(P<0.05)。结论:益气养阴活血汤运用于冠状动脉粥样硬化性心脏病介入治疗后,能够有效改善患者TC、LDL-C水平,还可有效避免心脏缺血及不良反应发生率。展开更多
文摘Objectives Bai Ku Yao(White-trousers Yaos)is a special branch of Yao minority in China.They are now living in both Lihu and Baxu villages,Nandan County, Guangxi,China.The population size is about 30,000.The special customs and culture of Bai Ku Yao,including their special clothing,intra-ethnic marriages and alcohol intake are still completely conserved to the present day.In previous epidemiologic studies,we found that the serum lipid levels and the prevalence of hyperlipidaemia were lower in Bai Ku Yao than in Han Chinese from the same region.This ethnic difference in serum lipid profiles is still not well known.We hypothesized that there may be significant differences in some genetic polymorphismsssociation of low density lipoprotein receptor (LDL-R) genepolymorphism and several environmental factors with serum lipid levels in the Guangxi Bai Ku Yao and Han populations.Methods A total of 1024 subjects of Bai Ku Yao and 792 participants of Han Chinese were stud- ied by a stratified randomized cluster sampling.Epidemiological survey was carried out using internationally standardized methods.Information on demographics,socioeconomic status, and lifestyle factors was collected with standardized questionnaires. The height,weight,waist circumference,blood pressure, and serum total cholesterol(TC),triglyceride(TG), high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C),apolipoprotein(Apo) A1, and ApoB were measured.Body massindex(BMI,kg/m2) was calculated.Genotyping of the LDL-RAvaⅡwas performed by polymerse chain reaction and restriction fragment length polymorphism combined with gel electrophoresis,and then confirmed by direct sequencing.Results(l)The height,weight,serum TC,HDL-C,LDL-C,ApoAl levels and the ratio of ApoAl to ApoB were lower in Bai Ku Yao than in Han Chinese(P【0.01 for all),whereas the percentage of subjects who consumed alcohol or smoked cigarettes was higher in Bai Ku Yao than in Han Chinese(P【0.01 for each).(2) The frequency of A+ allele in Bai Ku Yao was 34.5%,and the frequencies of A-A-,A-A+ and A+A + genotypes were 42.6%,45.9%and 11.5%;respectively. The frequency of A+ allele in Han Chinese was 19.3%(P【0.001),and the frequencies of A-A-,A-A + and A+A+ genotypes were 64.9%,31.6%and 3.5%(P【0.001);respectively. The frequencies of A-A-,A-A+ and A+A+ genotypes in Bai Ku Yao were significant difference between males and females,between normal TC and high TC subgroup, and between normal LDL-C and high LDL-C subgroup (P【0.05 for all),whereas the frequencies of A- and A+ ? alleles in Han Chinese were significant difference between males and females(P【0.05).(3) Serum LDL-C levels in Bai Ku Yao were significant difference among the A-A-, A-A+ and A+A+ genotypes(P【0.05),the A+ carriers had higher serum LDL-C levels.Serum HDL-C levels in Han Chiese were significant difference among the A-A-,A-A + and A+A+ genotypes(P【0.01),the A+ carriers had higher serum HDL-C levels.(4) After adjusting other factors,the prevalence of LDL-C abnormality was still higher in Han Chiese than in Bai Ku Yao.The prevalence of TC abnormality in Han Chinese was almost twice high as in Bai Ku Yao. The age and diet were common risk factor for TC abnormality. No effect of AvaⅡgenotype or alcohol consumption on the TC abnormality was found,but the combination of geno-type and alcohol consumption can increase the prevalence of TC abnormality[Exp(B) =(1.154)].Age was negatively cor- related with TG level.Conclusions Serum TC and LDL-C levels were lower in Bai Ku Yao than in Han Chinese.There were significant differences in the AvaⅡallele and genotype frequencies between the he A+ carriers in Bai Ku Yao had higher serum LDL-C levels,whereas the A+ carriers in Han had higher serum HDL-C levels.Interactions between alcohol consumption or cigarette smoking and the LDL-R AvaⅡgenotype were also observed.The differences in the serum lipid profiles between the two ethnic groups might partly result from different genotypic frequency of LDL-R AvaⅡpolymorphism or differentgene-enviromental interactions.Bai Ku Yao and Han population,the frequency of A + allele was higher in Bai Ku Yao than in Han.T between the two ethnic groups.Therefore,the aim of the present study was to detect the
文摘目的分析甲状腺结节发生与糖脂代谢水平的相关性。方法选取厦门弘爱医院(2022年1—12月)接受甲状腺检查者100例,根据患者的检查结果不同分组,其中检查结果为甲状腺结节的患者50例为研究组,检查结果为未发生甲状腺结节的患者50例为对照组。分析患者的基础资料,明确甲状腺结节发生与糖脂代谢水平[空腹血糖(fasting plasma glucose,FPG)、总胆固醇(total cholesterol,TC)、三酰甘油(triglyceride,TG)、低密度脂蛋白胆固醇(low density lipoprotein cholesterol,LDL-C)及高密度脂蛋白胆固醇(high density lipid-cholesterol,HDL-C)]的相关性。结果研究组FPG、TC、TG和LDL-C水平较对照组更高,差异有统计学意义(P<0.05)。而在HDL-C指标相比之下,差异无统计学意义(P>0.05)。因FT3、FT4、TSH均有不确定值为等级资料行Spearman秩相关分析。TSH与FPG、TC、LDL-C、HDL-C均呈正相关(r值分别为0.105、0.635、0.143、0.704、0.619,P<0.01),而FT3与FPG、TC、LDL-C、HDL-C均呈负相关(r值分别为-0.568、-0.676、-0.352、-0.702、-0.764,P<0.01),FT4与FPG、TC、LDL-C、HDL-C均呈负相关(r值分别为-0.401、-0.547、-0.425、-0.639、-0.493,P<0.01)。结论血清FPG、TC、TG、LDL-C升高,HDL-C降低,为甲状腺结节诱发因素。
基金supported by National Natural Science Foundation of China(No.61571061)
文摘In this paper, we focus on the design of irregular QC-LDPC code based multi-level coded modulation(MLCM) scheme by jointly optimizing the component code rate and the degree distribution of the irregular QC-LDPC component code. Firstly, the sub-channel capacities of MLCM systems is analyzed and discussed, based on which the optimal component code rate can be obtained. Secondly, an extrinsic information transfer chart based two-stage searching algorithm is proposed to find the good irregular QC-LDPC code ensembles with optimal component code rates for their corresponding sub-channels. Finally, by constructing the irregular QC-LDPC component codes from the designed ensembles with the aim of possibly enlarging the girth and reducing the number of the shortest cycles, the designed irregular QC-LDPC code based 16QAM and 64QAM MLCM systems can achieve 0.4 dB and 1.2 dB net coding gain, respectively, compared with the recently proposed regular QC-LDPC code based 16QAM and 64QAM MLCM systems.
文摘QLC（Quad-Level Cell） NAND flash will be one of the future technologies for next generation memory chip after three-dimensional（3D） TLC（Triple-Level Cell） stacked NAND flash. In QLC device, data errors will easily occur because of 2~4 data levels in the limited voltage range. This paper studies QLC NAND technology which is 4 bits per cell. QLC programming methods based on 16 voltage levels and reading method based on ＂half-change＂ Gray coding are researched. Because of the probable error impact of QLC NAND cell＇s voltage change, the solution of generating the soft information after XOR（exclusive OR） the soft bits by internal read mechanism is presented for Low-Density Parity-Check（LDPC） Belief Propagation（BP） decoding in QLC design for its system level application.
文摘目的:观察益气养阴活血汤对冠状动脉粥样硬化性心脏病介入治疗术后患者血脂水平的影响。方法:选取2014年2月至2016年4月本院收治入院的行介入治疗的冠状动脉粥样硬化性心脏病患者80例,随机分为对照组和治疗组,每组各40例。对照组给予瑞舒伐他汀,治疗组在对照组的基础上联合益气养阴活血汤。观察两组患者治疗前后血脂水平[三酰甘油(three acyl glycerol,TG)、总胆固醇(total cholesterol,TC)、高密度脂蛋白(high density lipoprotein,HDL)及低密度脂蛋白(low density lipoprotein,LDL)]变化、心脏缺血事件发生情况及不良反应情况。结果:两组患者治疗后TC及LDL-C水平低于治疗前,且治疗组低于对照组,差异具有统计学意义(P<0.05)。对照组心脏缺血发生率为45.0%,治疗组心脏缺血发生率为10.0%,两组患者心脏缺血发生率比较,差异具有统计学意义(P<0.05)。对照组不良反应发生率为5.0%,治疗组不良反应发生率为27.5%,两组患者不良反应发生率比较,差异具有统计学意义(P<0.05)。结论:益气养阴活血汤运用于冠状动脉粥样硬化性心脏病介入治疗后,能够有效改善患者TC、LDL-C水平,还可有效避免心脏缺血及不良反应发生率。
文摘目的:分析Leber先天性黑矇(Leber congenital amaurosis,LCA)患者血清脂质浓度的变化。方法:采用回顾性序列病例研究方法,选取临床诊断为LCA的患者50例作为LCA组,选取52例正常人作为正常对照组,按盲法由专业技术人员测量两组受检者血清中低密度脂蛋白胆固醇(low density lipoprotein cholesterol,LDL-C)、高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)、甘油三酯(triglycerides,TG)、总胆固醇(total cholesterol,TC)含量,并对两组受检者的测量结果进行比较。结果:LCA患者50例中,血脂水平异常者占46%,其中低HDL-C血症者占26%,高TG血症者占48%,高TC血症者占17%,混合型高脂血症者占9%。LCA患者血清HDL-C浓度为1.221±0.317mmol/L,较正常对照组明显下降,差异有统计学意义(P<0.05);血清TG浓度(1.377±1.171mmol/L)和TC浓度(4.506±0.694mmol/L)与正常对照组相比均明显升高,差异有统计学意义(均P<0.01);LDL-C浓度与正常对照组相比,差异无统计学意义(P>0.05)。结论:LCA患者血清HDL-C、TG和TC浓度异常变化可能与LCA的发病相关。
