In this work, a quantum-chemical investigation on the structural and opto-electronic properties of oligo（thiophene-phenylene） （4TP） is carried out. The results are discussed in comparison with the properties of co...In this work, a quantum-chemical investigation on the structural and opto-electronic properties of oligo（thiophene-phenylene） （4TP） is carried out. The results are discussed in comparison with the properties of corresponding oligothiophene （8T） and oligophenylene （8P）. As the opto-electronic properties of this type of conducting polymers are governed by their electronic band gap, we shall also present a comparison among HOMO, LUMO and band gap energies of these three materials.展开更多
目的设计单纯疱疹病毒2型(HSV-2)诊断芯片的O ligo探针。方法利用BLA ST软件对HSV-2的DNA序列进行序列比对,得到有意义的特异序列;用生物学软件O ligo6.0设计特异性高、Tm值相近、长度均一的O ligo探针。结果获得13条60-m er O ligo探...目的设计单纯疱疹病毒2型(HSV-2)诊断芯片的O ligo探针。方法利用BLA ST软件对HSV-2的DNA序列进行序列比对,得到有意义的特异序列;用生物学软件O ligo6.0设计特异性高、Tm值相近、长度均一的O ligo探针。结果获得13条60-m er O ligo探针。结论利用BLA ST系统和生物学软件O ligo6.0设计HSV-2诊断芯片的探针,可为后期打印成DNA芯片,用于HSV-2的检测打下基础。展开更多
为给梨品种S基因芯片的制备及梨品种自交不亲和性S-RNase基因和S基因型的检测奠定基础,结合已有的对梨自交不亲和S-RNase基因的研究成果及Genbank中梨S-RNase基因信息,利用生物学比对软件Genedoce对梨S-RNase等位基因序列进行比对,得到...为给梨品种S基因芯片的制备及梨品种自交不亲和性S-RNase基因和S基因型的检测奠定基础,结合已有的对梨自交不亲和S-RNase基因的研究成果及Genbank中梨S-RNase基因信息,利用生物学比对软件Genedoce对梨S-RNase等位基因序列进行比对,得到等位基因HV区的特异序列;用oligo6.71、Premier Premier 5.0和Clustal.W等生物学软件设计特异性高、解链温度Tm值接近、长度均一的oligo探针,获得了24条32 mer的oligo探针。展开更多
Recurrence of colorectal cancer(CRC)often presents as solitary metastases,oligometastases or oligo-recurrence.Surgical resection became the preferred treatment for patients with CRC lung and hepatic metastases.However...Recurrence of colorectal cancer(CRC)often presents as solitary metastases,oligometastases or oligo-recurrence.Surgical resection became the preferred treatment for patients with CRC lung and hepatic metastases.However,surgical treatment for oligo-recurrence within nodal area is not a widely accepted treatment due to due to their relative rarity and high postoperative morbidity.Stereotactic body radiotherapy(SBRT)is one of the emerging radiation treatment techniques in which a high radiation dose can be delivered to the tumor.High-dose SBRT can ablate the tumor with an efficacy similar to that achieved with surgery,especially for small tumors.However,there have been very few studies on SBRT for oligo-recurrence within nodal area,although several studies have evaluated the role of SBRT in the treatment of liver and lung metastases from CRC.This article reviews the current clinical status of and treatment methods for oligo-recurrence within nodal area from CRC,with particular emphasis on SBRT.展开更多
In the practical use for the production of the α-olefins, it is highly desired to develop a novel heterogeneous catalyst system. The metal complexes immobilized into the clay interlayers show a great potential as het...In the practical use for the production of the α-olefins, it is highly desired to develop a novel heterogeneous catalyst system. The metal complexes immobilized into the clay interlayers show a great potential as heterogeneous catalysts due to their excellent processability. In this study, nine types of heterogeneous procatalyst Ln/Ni2+-micas were synthesized via a one-pot preparation method, which includes both the condensation reaction of the ligand derivatives and the intercalation of the ligands into the Ni2+ ion-exchanged fluorotetrasilicic mica interlayer. The ligand structures of the prepared procatalysts were [Ln: R-N = C(Nap)-C(Nap) = N-R] [(Nap = 1,8-naphthdiyl) (L1, R = 2-MePh;L2, R = 2-FPh;L3, R = 2-BrPh;L4, R = 4-MePh;L5, R = 4-FPh;L6, R = 4-BrPh;L7, R = 2,4-F2Ph;L8, R = 2,4-Br2Ph;L9, R = 2,6-F2Ph). At 50℃ and 0.7 MPaethylene pressure, the triisobutylaluminum-activated L1-L6/Ni2+-mica showed a catalytic activity for the ethylene oligo-/polymerization in the range of 334 - 549 g-ethylene•g-cat–1•h–1. A high catalyst activity was obtained when the substituent having a larger steric bulk than that of a methyl substituent was introduced at the ortho-position of the aryl rings. The introduction of the fluorine substituent as a strong electron-withdrawing group to the para-position also increased the catalytic activity. The L2, L4, L5, and L6/Ni2+-micas showed moderate selectivities to oligomers consisting of C4-C20 in the range of 19.9 - 41.6 wt% at 50℃. The calculated Schulz-Flory constants α based on the mole fraction of C12 and C14 were within 0.61 - 0.78.展开更多
【目的】深化柑橘减数分裂粗线期染色体结构组成和配对分析。【方法】首次利用柑橘染色体全长特异寡核苷酸荧光原位杂交(oligo-fluorescence in situ hybridization,oligo-FISH)涂染探针,精准示踪鉴定沙田柚粗线期1号染色体的结构特征,...【目的】深化柑橘减数分裂粗线期染色体结构组成和配对分析。【方法】首次利用柑橘染色体全长特异寡核苷酸荧光原位杂交(oligo-fluorescence in situ hybridization,oligo-FISH)涂染探针,精准示踪鉴定沙田柚粗线期1号染色体的结构特征,比较其与有丝分裂间期细胞核、有丝分裂前中期和中期染色体的结构差异,并揭示粗线期全长染色体的同源配对。【结果】观测到同源配对的全长粗线期与有丝分裂中期较大染色质结构差异。经测定,柚粗线期1号染色体平均全长、长臂长、短臂长和臂比分别为中期的13.93倍、16.54倍、10.44倍和1.54倍,表现出更高FISH信号分辨率。检测到柚粗线期1号染色体着丝粒附近约3.01 Mb的探针信号缺失区。【结论】首次实现柑橘特定全长粗线期染色体的跟踪研究,为深入开展其结构和配对遗传利用的精准研究提供了新方法。展开更多
In the present study we report on changes in irritable bowel syndrome-severity scoring system (IBS-SSS) and irritable bowel syndrome-quality of life (IBS-QoL) in 19 IBS patients, aged 18 to 74 years (F/M: 14/5), durin...In the present study we report on changes in irritable bowel syndrome-severity scoring system (IBS-SSS) and irritable bowel syndrome-quality of life (IBS-QoL) in 19 IBS patients, aged 18 to 74 years (F/M: 14/5), during 12 wk registering their symptoms on the web-application (www.ibs.constant-care.dk). During a control period of the first 6-wk patients were asked to register their IBS-SSS and IBS-QoL on the web-application weekly without receiving any intervention. Thereafter, low fermentable oligo-, di-, mono-saccharides and polyols (FODMAP) diet (LFD) was introduced for the next 6 wk while continuing the registration. Though a small sample size a significant improvement in disease activity (IBS-SSS) was observed during both the control period, median: 278 (range: 122-377), P = 0.02, and subsequently during the LFD period, median: 151 (range: 29-334), P < 0.01. The IBS-QoL solely changed significantly during the LFD period, median: 67 (37-120), P < 0.01. The significant reduction in disease activity during the control period shows a positive effect of the web-application on IBS symptoms when presented as a “traffic light”. However adding the diet reduced IBS-SSS to < 150, inactive to mild symptoms. In the future results from larger scale trials are awaited.展开更多
文摘In this work, a quantum-chemical investigation on the structural and opto-electronic properties of oligo（thiophene-phenylene） （4TP） is carried out. The results are discussed in comparison with the properties of corresponding oligothiophene （8T） and oligophenylene （8P）. As the opto-electronic properties of this type of conducting polymers are governed by their electronic band gap, we shall also present a comparison among HOMO, LUMO and band gap energies of these three materials.
文摘目的设计单纯疱疹病毒2型(HSV-2)诊断芯片的O ligo探针。方法利用BLA ST软件对HSV-2的DNA序列进行序列比对,得到有意义的特异序列;用生物学软件O ligo6.0设计特异性高、Tm值相近、长度均一的O ligo探针。结果获得13条60-m er O ligo探针。结论利用BLA ST系统和生物学软件O ligo6.0设计HSV-2诊断芯片的探针,可为后期打印成DNA芯片,用于HSV-2的检测打下基础。
文摘为给梨品种S基因芯片的制备及梨品种自交不亲和性S-RNase基因和S基因型的检测奠定基础,结合已有的对梨自交不亲和S-RNase基因的研究成果及Genbank中梨S-RNase基因信息,利用生物学比对软件Genedoce对梨S-RNase等位基因序列进行比对,得到等位基因HV区的特异序列;用oligo6.71、Premier Premier 5.0和Clustal.W等生物学软件设计特异性高、解链温度Tm值接近、长度均一的oligo探针,获得了24条32 mer的oligo探针。
基金Supported by the National Nuclear R and D Program of the Ministry of Science,ICt and Future Planning,South Korea
文摘Recurrence of colorectal cancer(CRC)often presents as solitary metastases,oligometastases or oligo-recurrence.Surgical resection became the preferred treatment for patients with CRC lung and hepatic metastases.However,surgical treatment for oligo-recurrence within nodal area is not a widely accepted treatment due to due to their relative rarity and high postoperative morbidity.Stereotactic body radiotherapy(SBRT)is one of the emerging radiation treatment techniques in which a high radiation dose can be delivered to the tumor.High-dose SBRT can ablate the tumor with an efficacy similar to that achieved with surgery,especially for small tumors.However,there have been very few studies on SBRT for oligo-recurrence within nodal area,although several studies have evaluated the role of SBRT in the treatment of liver and lung metastases from CRC.This article reviews the current clinical status of and treatment methods for oligo-recurrence within nodal area from CRC,with particular emphasis on SBRT.
文摘In the practical use for the production of the α-olefins, it is highly desired to develop a novel heterogeneous catalyst system. The metal complexes immobilized into the clay interlayers show a great potential as heterogeneous catalysts due to their excellent processability. In this study, nine types of heterogeneous procatalyst Ln/Ni2+-micas were synthesized via a one-pot preparation method, which includes both the condensation reaction of the ligand derivatives and the intercalation of the ligands into the Ni2+ ion-exchanged fluorotetrasilicic mica interlayer. The ligand structures of the prepared procatalysts were [Ln: R-N = C(Nap)-C(Nap) = N-R] [(Nap = 1,8-naphthdiyl) (L1, R = 2-MePh;L2, R = 2-FPh;L3, R = 2-BrPh;L4, R = 4-MePh;L5, R = 4-FPh;L6, R = 4-BrPh;L7, R = 2,4-F2Ph;L8, R = 2,4-Br2Ph;L9, R = 2,6-F2Ph). At 50℃ and 0.7 MPaethylene pressure, the triisobutylaluminum-activated L1-L6/Ni2+-mica showed a catalytic activity for the ethylene oligo-/polymerization in the range of 334 - 549 g-ethylene•g-cat–1•h–1. A high catalyst activity was obtained when the substituent having a larger steric bulk than that of a methyl substituent was introduced at the ortho-position of the aryl rings. The introduction of the fluorine substituent as a strong electron-withdrawing group to the para-position also increased the catalytic activity. The L2, L4, L5, and L6/Ni2+-micas showed moderate selectivities to oligomers consisting of C4-C20 in the range of 19.9 - 41.6 wt% at 50℃. The calculated Schulz-Flory constants α based on the mole fraction of C12 and C14 were within 0.61 - 0.78.
文摘【目的】深化柑橘减数分裂粗线期染色体结构组成和配对分析。【方法】首次利用柑橘染色体全长特异寡核苷酸荧光原位杂交(oligo-fluorescence in situ hybridization,oligo-FISH)涂染探针,精准示踪鉴定沙田柚粗线期1号染色体的结构特征,比较其与有丝分裂间期细胞核、有丝分裂前中期和中期染色体的结构差异,并揭示粗线期全长染色体的同源配对。【结果】观测到同源配对的全长粗线期与有丝分裂中期较大染色质结构差异。经测定,柚粗线期1号染色体平均全长、长臂长、短臂长和臂比分别为中期的13.93倍、16.54倍、10.44倍和1.54倍,表现出更高FISH信号分辨率。检测到柚粗线期1号染色体着丝粒附近约3.01 Mb的探针信号缺失区。【结论】首次实现柑橘特定全长粗线期染色体的跟踪研究,为深入开展其结构和配对遗传利用的精准研究提供了新方法。
文摘In the present study we report on changes in irritable bowel syndrome-severity scoring system (IBS-SSS) and irritable bowel syndrome-quality of life (IBS-QoL) in 19 IBS patients, aged 18 to 74 years (F/M: 14/5), during 12 wk registering their symptoms on the web-application (www.ibs.constant-care.dk). During a control period of the first 6-wk patients were asked to register their IBS-SSS and IBS-QoL on the web-application weekly without receiving any intervention. Thereafter, low fermentable oligo-, di-, mono-saccharides and polyols (FODMAP) diet (LFD) was introduced for the next 6 wk while continuing the registration. Though a small sample size a significant improvement in disease activity (IBS-SSS) was observed during both the control period, median: 278 (range: 122-377), P = 0.02, and subsequently during the LFD period, median: 151 (range: 29-334), P < 0.01. The IBS-QoL solely changed significantly during the LFD period, median: 67 (37-120), P < 0.01. The significant reduction in disease activity during the control period shows a positive effect of the web-application on IBS symptoms when presented as a “traffic light”. However adding the diet reduced IBS-SSS to < 150, inactive to mild symptoms. In the future results from larger scale trials are awaited.
