Many attempts have been made to estimate calorific value of bagasse using mathematical equations, which were created based on data from proximate, ultimate, physical and chemical analysis. Questions have been raised o...Many attempts have been made to estimate calorific value of bagasse using mathematical equations, which were created based on data from proximate, ultimate, physical and chemical analysis. Questions have been raised on the applicability of these equations in different parts of the globe. This study was initiated to tackle these problems and also check the most suited mathematical models for the Law Heating Value of Cameroonian bagasse. Data and bagasse samples were collected at the Cameroonian sugarcane factory. The effects of cane variety, age of harvesting, source, moisture content, and sucrose on the LHV of Cameroon bagasse have been tested. It was shown that humidity does not change within a variety, but changes from the dry season to the rainy season;the sugar in the rainy season is significantly different from that collected in the dry season. Samples of the same variety have identical LHV. LHV in the dry season is significantly different from LHV in the rainy season. According to the fact that this study was done for cane with different ages of harvesting, the maturity of Cameroonian sugarcane does not affect LHV of bagasse. Tree selected models are much superior tool for the prediction of the LHV for bagasse in Cameroon compared to others. The standard deviation of these validated models is around 200 kJ/kg compared to the experimental. Thus, the models determined in foreign countries, are not necessarily applicable in predicting the LHV of bagasse in other countries with the same accuracy as that in their native country. There was linear relationship between humidity, ash and sugar content in the bagasse. It is possible to build models based on data from physical composition of bagasse using regression analysis.展开更多
报告一例常染色体隐性遗传发病的骨质疏松症-假性胶质瘤综合征。先证者女性,23岁,父母非近亲结婚,出生后发现双目失明,婴儿期因发现右眼视网膜母细胞瘤行右眼球摘除术,9岁开始反复发生轻微外力骨折,诊断为成骨不全。查体发现脊柱侧凸畸...报告一例常染色体隐性遗传发病的骨质疏松症-假性胶质瘤综合征。先证者女性,23岁,父母非近亲结婚,出生后发现双目失明,婴儿期因发现右眼视网膜母细胞瘤行右眼球摘除术,9岁开始反复发生轻微外力骨折,诊断为成骨不全。查体发现脊柱侧凸畸形、胸廓畸形、双上肢肘外翻、四肢关节韧带松弛。双能X线吸收检测仪(dual energy X-ray absorptiometry,DXA)骨密度明显低于同龄人,腰椎1-4骨密度Z值-5,左髋骨密度Z值-1.8。X线摄片示全身骨小梁稀疏。Sanger测序显示低密度脂蛋白受体相关蛋白-5(lowdensity lipoprotein receptor-related protein 5,LRP5)基因的6号外显子和23号外显子发生复合杂合突变,导致p.Pro382Leu+p.Cys1611LeufsX33。本文通过文献复习对该病的临床表现和诊疗特点进行讨论及总结,以期帮助临床医生提高对这一疾病的认识。展开更多
目的分析低密度脂蛋白受体相关蛋白5(low density lipoprotein receptor related protein 5,LRP5)rs556442、rs312778位点基因多态性及突变在绝经后女性2型糖尿病(type 2 diabetes mellitus,T2DM)患者中骨量异常的意义。方法收集2021年...目的分析低密度脂蛋白受体相关蛋白5(low density lipoprotein receptor related protein 5,LRP5)rs556442、rs312778位点基因多态性及突变在绝经后女性2型糖尿病(type 2 diabetes mellitus,T2DM)患者中骨量异常的意义。方法收集2021年5月至2023年5月新疆石河子地区的142例绝经后女性资料进行回顾性分析,分为正常对照组(A组,n=29)、T2DM组(B组,n=30)、骨量降低组(C组,n=28)、骨量降低+T2DM组(D组,n=55)。收集记录相关基线资料,运用全自动生化测定仪测定受试者血糖、血脂及骨代谢指标。通过双能X线骨密度仪测定骨密度(bone mineral density BMD),LRP5基因位点多态性采用飞行时间质谱法(MALDI-TOF-MS)测定,采用SNPscan技术对上述SNP位点进行基因分型。结果①四组基线资料比较,绝经年限、年龄及腰臀比(waist hip ratio,WHR)比较差异具有统计学意义(P<0.05);②与A组相比,B组的空腹血糖(FPG)、糖化血红蛋白(HbA1c)升高(P<0.05);D组的FPG、HbA1c的血清学水平升高,甘油三酯(TG)血清学水平降低(P<0.05);③rs556442位点:与A组相比,D组基因型分布(AA/AG/GG基因型)有统计学意义(P<0.05);rs312778位点组间基因型(CC/CT/TT基因型)及等位基因分布频率均无统计学意义(P>0.05);④rs556442位点:与AA基因型相比,B、C组AG/GG基因型的股骨颈BMD水平降低;D组AG/GG型的HDL血清学水平降低(P<0.05)。rs312778位点:与CC基因型相比,A组HbA1C、FPG血清学水平较CT/TT基因型低(P<0.05);D组CT/TT基因型的低密度脂蛋白(LDL)血清学水平升高(P<0.05);⑤多元线性回归分析:rs556442位点,TG增加是腰L_(1~4)BMD降低的危险因素(P<0.05);rs312778位点,体质量指数(body mass index,BMI)降低是腰L_(1~4)及股骨颈BMD降低的危险因素,TG增加是腰L_(1~4)BMD降低的危险因素(P<0.05);⑥在rs556442、rs312778位点骨量异常与基因型分布均无统计学意义(P>0.05)。结论新疆石河子地区绝经后T2DM女性患者LRP5基因rs556442、rs312778基因位点的突变可能与骨量降低有关。展开更多
目的探讨微小RNA-370-3p(miR-370-3p)和低密度脂蛋白受体相关蛋白6(LRP6)对胎儿生长受限(FGR)孕妇的临床诊断价值。方法选取2020年6月—2022年6月期间产检并确诊为FGR的孕妇96例为观察组,另选取同期产检的健康孕妇96例作为对照组,记录...目的探讨微小RNA-370-3p(miR-370-3p)和低密度脂蛋白受体相关蛋白6(LRP6)对胎儿生长受限(FGR)孕妇的临床诊断价值。方法选取2020年6月—2022年6月期间产检并确诊为FGR的孕妇96例为观察组,另选取同期产检的健康孕妇96例作为对照组,记录两组分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量,依据美国妇产科学院(ACOG)标准将观察组划分为FGR组、严重FGR组。qRT-PCR法检测血清miR-370-3p和LRP6 mRNA表达水平;血清miR-370-3p和LRP6 mRNA水平与分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量的相关性采用Pearson法分析;miR-370-3p和LRP6 mRNA对FGR的诊断价值采用ROC曲线评估。结果两组孕妇年龄、分娩孕周、是否初产的比例差异有统计学意义(P<0.05);观察组miR-370-3p显著高于对照组,LRP6显著低于对照组(P<0.05);严重FGR组miR-370-3p显著高于FGR组,LRP6显著低于FGR组(P<0.05);对照组与观察组新生儿体重、1 min Apgar评分、5 min Apgar评分及胎盘质量之间差异有统计学意义(P<0.05);miR-370-3p与LRP6之间呈负相关(r=-0.692,P<0.05),miR-370-3p与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈负相关(r=-0.401、-0.382、-0.425、-0.484、-0.504,均P<0.05),LRP6与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈正相关(r=0.306、0.412、0.512、0.612、0.419,均P<0.05);ROC曲线显示,miR-370-3p对FGR诊断的AUC为0.877(95%CI:0.821~0.919),截断值为1.40,其敏感度、特异性分别为67.71%、93.75%;LRP6对FGR诊断的AUC为0.838(95%CI:0.778~0.887),截断值为0.83,其敏感度、特异性分别为84.37%、71.87%;二者联合对FGR诊断的AUC为0.923(95%CI:0.875~0.956),明显高于二者单独诊断(Z联合vs miR-370-3P=2.811、P=0.005;Z联合vs LRP6=3.372、P=0.001),其敏感度、特异性分别为85.42%、87.50%。结论FGR患者血清miR-370-3p高表达、LRP6低表达,二者联合对FGR具有一定诊断价值。展开更多
文摘Many attempts have been made to estimate calorific value of bagasse using mathematical equations, which were created based on data from proximate, ultimate, physical and chemical analysis. Questions have been raised on the applicability of these equations in different parts of the globe. This study was initiated to tackle these problems and also check the most suited mathematical models for the Law Heating Value of Cameroonian bagasse. Data and bagasse samples were collected at the Cameroonian sugarcane factory. The effects of cane variety, age of harvesting, source, moisture content, and sucrose on the LHV of Cameroon bagasse have been tested. It was shown that humidity does not change within a variety, but changes from the dry season to the rainy season;the sugar in the rainy season is significantly different from that collected in the dry season. Samples of the same variety have identical LHV. LHV in the dry season is significantly different from LHV in the rainy season. According to the fact that this study was done for cane with different ages of harvesting, the maturity of Cameroonian sugarcane does not affect LHV of bagasse. Tree selected models are much superior tool for the prediction of the LHV for bagasse in Cameroon compared to others. The standard deviation of these validated models is around 200 kJ/kg compared to the experimental. Thus, the models determined in foreign countries, are not necessarily applicable in predicting the LHV of bagasse in other countries with the same accuracy as that in their native country. There was linear relationship between humidity, ash and sugar content in the bagasse. It is possible to build models based on data from physical composition of bagasse using regression analysis.
文摘报告一例常染色体隐性遗传发病的骨质疏松症-假性胶质瘤综合征。先证者女性,23岁,父母非近亲结婚,出生后发现双目失明,婴儿期因发现右眼视网膜母细胞瘤行右眼球摘除术,9岁开始反复发生轻微外力骨折,诊断为成骨不全。查体发现脊柱侧凸畸形、胸廓畸形、双上肢肘外翻、四肢关节韧带松弛。双能X线吸收检测仪(dual energy X-ray absorptiometry,DXA)骨密度明显低于同龄人,腰椎1-4骨密度Z值-5,左髋骨密度Z值-1.8。X线摄片示全身骨小梁稀疏。Sanger测序显示低密度脂蛋白受体相关蛋白-5(lowdensity lipoprotein receptor-related protein 5,LRP5)基因的6号外显子和23号外显子发生复合杂合突变,导致p.Pro382Leu+p.Cys1611LeufsX33。本文通过文献复习对该病的临床表现和诊疗特点进行讨论及总结,以期帮助临床医生提高对这一疾病的认识。
文摘目的分析低密度脂蛋白受体相关蛋白5(low density lipoprotein receptor related protein 5,LRP5)rs556442、rs312778位点基因多态性及突变在绝经后女性2型糖尿病(type 2 diabetes mellitus,T2DM)患者中骨量异常的意义。方法收集2021年5月至2023年5月新疆石河子地区的142例绝经后女性资料进行回顾性分析,分为正常对照组(A组,n=29)、T2DM组(B组,n=30)、骨量降低组(C组,n=28)、骨量降低+T2DM组(D组,n=55)。收集记录相关基线资料,运用全自动生化测定仪测定受试者血糖、血脂及骨代谢指标。通过双能X线骨密度仪测定骨密度(bone mineral density BMD),LRP5基因位点多态性采用飞行时间质谱法(MALDI-TOF-MS)测定,采用SNPscan技术对上述SNP位点进行基因分型。结果①四组基线资料比较,绝经年限、年龄及腰臀比(waist hip ratio,WHR)比较差异具有统计学意义(P<0.05);②与A组相比,B组的空腹血糖(FPG)、糖化血红蛋白(HbA1c)升高(P<0.05);D组的FPG、HbA1c的血清学水平升高,甘油三酯(TG)血清学水平降低(P<0.05);③rs556442位点:与A组相比,D组基因型分布(AA/AG/GG基因型)有统计学意义(P<0.05);rs312778位点组间基因型(CC/CT/TT基因型)及等位基因分布频率均无统计学意义(P>0.05);④rs556442位点:与AA基因型相比,B、C组AG/GG基因型的股骨颈BMD水平降低;D组AG/GG型的HDL血清学水平降低(P<0.05)。rs312778位点:与CC基因型相比,A组HbA1C、FPG血清学水平较CT/TT基因型低(P<0.05);D组CT/TT基因型的低密度脂蛋白(LDL)血清学水平升高(P<0.05);⑤多元线性回归分析:rs556442位点,TG增加是腰L_(1~4)BMD降低的危险因素(P<0.05);rs312778位点,体质量指数(body mass index,BMI)降低是腰L_(1~4)及股骨颈BMD降低的危险因素,TG增加是腰L_(1~4)BMD降低的危险因素(P<0.05);⑥在rs556442、rs312778位点骨量异常与基因型分布均无统计学意义(P>0.05)。结论新疆石河子地区绝经后T2DM女性患者LRP5基因rs556442、rs312778基因位点的突变可能与骨量降低有关。
文摘目的探讨微小RNA-370-3p(miR-370-3p)和低密度脂蛋白受体相关蛋白6(LRP6)对胎儿生长受限(FGR)孕妇的临床诊断价值。方法选取2020年6月—2022年6月期间产检并确诊为FGR的孕妇96例为观察组,另选取同期产检的健康孕妇96例作为对照组,记录两组分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量,依据美国妇产科学院(ACOG)标准将观察组划分为FGR组、严重FGR组。qRT-PCR法检测血清miR-370-3p和LRP6 mRNA表达水平;血清miR-370-3p和LRP6 mRNA水平与分娩孕周、1 min Apgar评分、5 min Apgar评分、新生儿体重、胎盘质量的相关性采用Pearson法分析;miR-370-3p和LRP6 mRNA对FGR的诊断价值采用ROC曲线评估。结果两组孕妇年龄、分娩孕周、是否初产的比例差异有统计学意义(P<0.05);观察组miR-370-3p显著高于对照组,LRP6显著低于对照组(P<0.05);严重FGR组miR-370-3p显著高于FGR组,LRP6显著低于FGR组(P<0.05);对照组与观察组新生儿体重、1 min Apgar评分、5 min Apgar评分及胎盘质量之间差异有统计学意义(P<0.05);miR-370-3p与LRP6之间呈负相关(r=-0.692,P<0.05),miR-370-3p与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈负相关(r=-0.401、-0.382、-0.425、-0.484、-0.504,均P<0.05),LRP6与分娩孕周、新生儿体重、1 min Apgar评分、5 min Apgar评分、胎盘质量均呈正相关(r=0.306、0.412、0.512、0.612、0.419,均P<0.05);ROC曲线显示,miR-370-3p对FGR诊断的AUC为0.877(95%CI:0.821~0.919),截断值为1.40,其敏感度、特异性分别为67.71%、93.75%;LRP6对FGR诊断的AUC为0.838(95%CI:0.778~0.887),截断值为0.83,其敏感度、特异性分别为84.37%、71.87%;二者联合对FGR诊断的AUC为0.923(95%CI:0.875~0.956),明显高于二者单独诊断(Z联合vs miR-370-3P=2.811、P=0.005;Z联合vs LRP6=3.372、P=0.001),其敏感度、特异性分别为85.42%、87.50%。结论FGR患者血清miR-370-3p高表达、LRP6低表达,二者联合对FGR具有一定诊断价值。