Influence of host plants on the development, survivorship, and fecundity of the summer fruit tortrix moth, Adoxophyes orana (Lepidoptera: Tortricidae)

Li Guang‐wei,Wang Hui‐min,Yang Wen‐tao,Chen Xiu‐lin,Li Bo‐liao,Chen Yu‐xin 한국곤충학회 2021 Entomological Research Vol.51 No.10

The summer fruit tortrix moth Adoxophyes orana is a seriously damaged leaf roller pest for fruit trees. In this study, we evaluated the effect of five host plants (apple, Malus domestica B.; peach, Prunus persica var. nectarina; apricot, Armeniaca vulgaris Lam.; mulberry, Morus alba L.; and jujube, Ziziphus jujuba M.) on the development, survival, and fecundity of A. orana under laboratory conditions. Results showed that the development times of A. orana on jujube were significantly longer than those on the other four plants. The preimaginal survival rate was influenced by the host plants, which were fed during the larval stage, and with the highest on peach, followed by apple, apricot, and mulberry, and with the lowest on jujube. Adult females from larvae reared on apricot laid the greatest numbers of eggs (318.11 eggs per female), while that on apple, jujube, and mulberry was smaller, and no significant difference was observed among them. The highest intrinsic rate of increase (rm) was observed on peach and apricot; these two fruit trees were considered to be the most suitable host plant for A. orana because of the shorter developmental duration, higher survival rate, and the highest fecundity.

FSCB phosphorylation in mouse spermatozoa capacitation

( Shun Li Liu ),( Bing Ni ),( Xiang Wei Wang ),( Wen Qian Huo ),( Jun Zhang ),( Zhi Qiang Tian ),( Ze Min Huang ),( Yi Tian ),( Jun Tang ),( Yan Hua Zheng ),( Feng Shuo Jin ),( Yan Feng Li ) 생화학분자생물학회(구 한국생화학분자생물학회) 2011 BMB Reports Vol.44 No.8

It is generally accepted that spermatozoa capacitation is associated with protein kinase A-mediated tyrosine phosphorylation. In our previous study, we identified the fibrous sheath CABYR binding protein (FSCB), which was phosphorylated by PKA. However, the phosphorylation status of FSCB protein during spermatozoa capacitation should be further investigated. To this aim, in this study, we found that phosphorylation of this 270-kDa protein occurred as early as 1 min after mouse spermatozoa capacitation, which increased over time and remained stable after 60 min. Immunoprecipitation assays demonstrated that the tyrosine and Ser/Thr phosphorylation of FSCB occurred during spermatozoa capacitation. The extent of phosphorylation and was closely associated with the PKA activity and spermatozoa motility characteristics. FSCB phosphorylation could be induced by PKA agonist DB-cAMP, but was blocked by PKA antagonist H-89.Therefore, FSCB contributes to spermatozoa capacitation in a tyrosine-phosphorylated format, which may help in further elucidating the molecular mechanism of spermatozoa capacitation. [BMB reports 2011; 44(8): 541-546]

Investigation of Hetero - Material - Gate in CNTFETs for Ultra Low Power Circuits

Wang, Wei,Xu, Min,Liu, Jichao,Li, Na,Zhang, Ting,Jiang, Sitao,Zhang, Lu,Wang, Huan,Gao, Jian The Institute of Electronics and Information Engin 2015 Journal of semiconductor technology and science Vol.15 No.1

An extensive investigation of the influence of gate engineering on the CNTFET switching, high frequency and circuit level performance has been carried out. At device level, the effects of gate engineering on the switching and high frequency characteristics for CNTFET have been theoretically investigated by using a quantum kinetic model. It is revealed that hetero - material - gate CNTFET(HMG - CNTFET) structure can significantly reduce leakage current, enhance control ability of the gate on channel, and is more suitable for use in low power and high frequency circuits. At circuit level, using the HSPICE with look - up table(LUT) based Verilog - A models, the performance parameters of circuits have been calculated and the optimum combinations of ${\Phi}_{M1}/{\Phi}_{M2}/{\Phi}_{M3}$ have been concluded in terms of power consumption, average delay, stability, energy consumption and power - delay product(PDP). We show that, compared to a traditional CNTFET - based circuit, the one based on HMG - CNTFET has a significantly better performance (SNM, energy, PDP). In addition, results also illustrate that HMG - CNTFET circuits have a consistent trend in delay, power, and PDP with respect to the transistor size, indicating that gate engineering of CNTFETs is a promising technology. Our results may be useful for designing and optimizing CNTFET devices and circuits.

DNA Microarray Probe Preparation by Gel Isolation Nested PCR

Wang, Hong-Min,Ma, Wen-li,Huang, Hai,Xiao, Wei-Wei,Wang, Yan,Zheng, Wen-Ling Korean Society for Biochemistry and Molecular Biol 2004 Journal of biochemistry and molecular biology Vol.37 No.3

To develop a simplified method that can rapidly prepare DNA microarray probes in a massive scale, a lambda phage genomic DNA-fragments library was constructed for the microarray-probes collection. Four methods of DNA band recovery from the first PCR products were tested and compared. The DNA microarray probes were collected by a novel method of nested PCR that was mediated by gel isolation of the first PCR products. This method was named GIN-PCR. The probes that were prepared by this GIN-PCR technique were used as subjects to fabricate a DNA microarray. The results showed that a wooden toothpick was superior to the other 3 methods, since this technique can steadily transfer the DNA bands as the template of the second PCR after the first PCR. A group of probes were successfully collected and DNA microarrays were constructed using these probes. Hybridization results demonstrated that this technique of DNA recovery and probe preparation was rapid, efficient, and effective. We developed a cost-effective and less labor-intensive method for DNA microarray probe preparation by nested PCR that is mediated by wooden toothpick transfer of the DNA bands in the gel after electrophoresis.

A chloroplast variation map generated using whole genome re-sequencing of Korean landrace rice reveals phylogenetic relationships among Oryza sativa subspecies

Wei Tong,Qiang He,Xiao-Qiang Wang,Min-Young Yoon,Won-Hee Ra,Feng Peng Li,Jie Yu,Win Htet Oo,Sun-Kyung Min,Buung Choi,Eun-Beom Heo,Byoung-Kook Yun,Kyu-Won Kim,Tae-Sung Kim,Chang-Yong Lee,Yong-Jin Park 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07

Although the overall structure of the chloroplast genome is generally conserved, a number of sequence variations have been identified, which are valuable for plant population and evolutionary studies. Here, we constructed a chloroplast variation map of 30 landrace rice strains of Korean origin, using the Oryza rufipogon chloroplast genome (Genbank: NC_017835) as a reference. Differential distribution of single nucleotide polymorphisms (SNPs) and indels across the rice chloroplast genome is suggestive of a region-specific variation. Population structure clustering revealed the existence of two clear subgroups (indica and japonica) and an admixture group (aus). Phylogenetic analysis of the 30 landrace rice strains and six rice chloroplast references suggested and supported independent evolution of O. sativa indica and japonica. Interestingly, two “aus” type accessions, which were thought to be indica type, shared a closer relationship with the japonica type. One hypothesis is that “Korean aus” was intentionally introduced and may have obtained japonica chloroplasts during cultivation. We also calculated the nucleotide diversity of 30 accessions and compared to six rice chloroplast references, which shown a higher diversity in the indica and aus groups than in the japonica group in lower level substitution diversity.

Redefinition of the ROK-U.S. Alliance and Implications for Sino-ROK Relations: A Chinese Perspective

( Wei Min Wang ),( Hua Xin ) 한국국방연구원 2012 The Korean Journal of Defense Analysis Vol.24 No.3

This article summarizes the redefinition process of the ROK (the Republic of Korea)-U.S. alliance since 2002 and elaborates, with a focus on the relocation of U.S. Forces Korea (USFK), the division of military-security roles inside the ROK-U.S. alliance, and the related debates on the future direction of this alliance. It is argued that through redefinition, the dual objective of "balance of interests"and "balance of threats" in the alliance has been basically achieved by the route of dual expansion, i.e. "expansion of defense area" and "expansion of connotation."So far, the ROK-U.S. strategic alliance has been reconstructed and consolidated, and the ROK has made its strategic choice to develop an even closer alliance with the United States, while alienating itself from and hedging against China in the short and medium term. Thus, Sino-ROK relations are entering a period of strategic reawakening and mutual wariness at the critical juncture of the 20th anniversary of Sino-ROK diplomatic normalization.

Channel and Gate Workfunction-Engineered CNTFETs for Low-Power and High-Speed Logic and Memory Applications

Wei Wang,Hongsong Xu,Zhicheng Huang,Lu Zhang,Huan Wang,Sitao Jiang,Min Xu,Jian Gao 대한전자공학회 2016 Journal of semiconductor technology and science Vol.16 No.1

Carbon Nanotube Field-Effect Transistors (CNTFETs) have been studied as candidates for post Si CMOS owing to the better electrostatic control and high mobility. To enhance the immunity against short - channel effects (SCEs), the novel channel and gate engineered architectures have been proposed to improve CNTFETs performance. This work presents a comprehensive study of the influence of channel and gate engineering on the CNTFET switching, high frequency and circuit level performance of carbon nanotube field-effect transistors (CNTFETs). At device level, the effects of channel and gate engineering on the switching and high frequency characteristics for CNTFET have been theoretically investigated by using a quantum kinetic model. This model is based on two-dimensional non-equilibrium Green’s functions (NEGF) solved self - consistently with Poisson’s equations. It is revealed that hetero -material - gate and lightly doped drain and source CNTFET (HMG - LDDS - CNTFET) structure can significantly reduce leakage current, enhance control ability of the gate on channel, improve the switching speed, and is more suitable for use in low power, high frequency circuits. At circuit level, using the HSPICE with look - up table(LUT) based Verilog - A models, the impact of the channel and gate engineering on basic digital circuits (inverter, static random access memory cell) have been investigated systematically. The performance parameters of circuits have been calculated and the optimum metal gate workfunction combinations of ФM1/ФM2 have been concluded in terms of power consumption, average delay, stability, energy consumption and power - delay product (PDP). In addition, we discuss and compare the CNTFET-based circuit designs of various logic gates, including ternary and binary logic. Simulation results indicate that LDDS - HMG - CNTFET circuits with ternary logic gate design have significantly better performance in comparison with other structures.

Outcomes of limited period of adalimumab treatment in moderate to severe Crohn’s disease patients: Taiwan Society of Inflammatory Bowel Disease Study

( Wei-chen Lin ),( Jen-wei Chou ),( Hsu-heng Yen ),( Wen-hung Hsu ),( Hung-hsin Lin ),( Jen-kou Lin ),( Chiao-hsiung Chuang ),( Tien-yu Huang ),( Horng-yuan Wang ),( Shu-chen Wei ),( Jau-min Wong ) 대한장연구학회 2017 Intestinal Research Vol.15 No.4

Background/Aims: In Taiwan, due to budget limitations, the National Health Insurance only allows for a limited period of biologics use in treating moderate to severe Crohn’s disease (CD). We aimed to access the outcomes of CD patients following a limited period use of biologics, specifically focusing on the relapse rate and remission duration; also the response rate to second use when applicable. Methods: This was a multicenter, retrospective, observational study and we enrolled CD patients who had been treated with adalimumab (ADA) according to the insurance guidelines from 2009 to 2015. Results: A total of 54 CD patients, with follow-up of more than 6 months after the withdrawal of ADA, were enrolled. The average period of treatment with ADA was 16.7±9.7 months. After discontinuing ADA, 59.3% patients suffered a clinical relapse. In the univariate analysis, the reason for withdrawal was a risk factor for relapse (P=0.042). In the multivariate analysis, current smoker became an important risk factor for relapse (OR, 3.9; 95% CI, 1.2-14.8; P=0.044) and male sex was another risk factor (OR, 2.9; 95% CI, 1.1-8.6; P=0.049). For those 48 patients who received a second round of biologics, the clinical response was seen in 60.4%, and 1 anaphylaxis occurred. Conclusions: Fifty-nine percent of patients experienced a relapse after discontinuing the limited period of ADA treatment, and most of them occurred within 1 year following cessation. Male sex and current smoker were risk factors for relapse. Though 60.4% of the relapse patients responded to ADA again. (Intest Res 2017;15:487-494)

Channel and Gate Workfunction-Engineered CNTFETs for Low-Power and High-Speed Logic and Memory Applications

Wang, Wei,Xu, Hongsong,Huang, Zhicheng,Zhang, Lu,Wang, Huan,Jiang, Sitao,Xu, Min,Gao, Jian The Institute of Electronics and Information Engin 2016 Journal of semiconductor technology and science Vol.16 No.1

Carbon Nanotube Field-Effect Transistors (CNTFETs) have been studied as candidates for post Si CMOS owing to the better electrostatic control and high mobility. To enhance the immunity against short - channel effects (SCEs), the novel channel and gate engineered architectures have been proposed to improve CNTFETs performance. This work presents a comprehensive study of the influence of channel and gate engineering on the CNTFET switching, high frequency and circuit level performance of carbon nanotube field-effect transistors (CNTFETs). At device level, the effects of channel and gate engineering on the switching and high frequency characteristics for CNTFET have been theoretically investigated by using a quantum kinetic model. This model is based on two-dimensional non-equilibrium Green's functions (NEGF) solved self - consistently with Poisson's equations. It is revealed that hetero - material - gate and lightly doped drain and source CNTFET (HMG - LDDS - CNTFET) structure can significantly reduce leakage current, enhance control ability of the gate on channel, improve the switching speed, and is more suitable for use in low power, high frequency circuits. At circuit level, using the HSPICE with look - up table(LUT) based Verilog - A models, the impact of the channel and gate engineering on basic digital circuits (inverter, static random access memory cell) have been investigated systematically. The performance parameters of circuits have been calculated and the optimum metal gate workfunction combinations of ${\Phi}_{M1}/{\Phi}_{M2}$ have been concluded in terms of power consumption, average delay, stability, energy consumption and power - delay product (PDP). In addition, we discuss and compare the CNTFET-based circuit designs of various logic gates, including ternary and binary logic. Simulation results indicate that LDDS - HMG - CNTFET circuits with ternary logic gate design have significantly better performance in comparison with other structures.

A Study on the U.S.A’s Evolving Policy and Possible Interactions of the U.S.A - China in the Korean Unification Process

wang wei min,진정미 한중사회과학학회 2013 한중사회과학연구 Vol.11 No.4

최근 오마바 정부의 북한정권에 대한 ‘전략적 인내정책’은 한반도의통일정책 범주 내에서 바라보면 실질적으로 상당한 인식의 변화를 동반하고 있음을 엿볼수 있다. 즉 한반도의 분단상황이라는 시각에서 보면 이는 분단의 ‘평화적 관리’를 넘어 장차 ‘통일한국’에 적합한 통일정책으로 수정한 것이다. 한반도에서 통일과정이나 통일후의 주변국들의이해관계가 첨예하게 얽혀 있기 때문에 이 정책은 이명박 정부시기의한반도의 ‘분할관리’ 정책에서 ‘통일준비’라는 전략적 패러다임의 변화를 추구함으로서 통일정책을 구상하고 추진하는데 강력한 영향을 미쳤다. 한국과 미국간의 새로운 통일정책에 대한 공동인식은 북한정권의비핵화와 호전적인 북한을 효과적으로 다루는데 많은 문제점을 야기하기도 했다. 결과적으로 합리적인 통일정책도구의 부재를 초래하였고,더 나아가 통일 과정에서 통일 한국의 핵보유, 주한미군의 주둔, 영토와 국경, 피난유민, 경제재건과 사회통합 문제 등 다양한 안보관련 쟁점들을 해결하기 바라는 의지를 반영하고 있는 것이다. 이와 같은 맥락에서 이 논문은 먼저 통일과정과 통일 후 한국에 대한 미국의 정책적진화를 탐구하고, 최근의 미국의 한반도 통일정책에 포함된 신사고의특징뿐만 아니라 이 시점에서 미국의 아시아 지역과 글로벌 지역의 관리를 위한 함축적이고 전략적인 의미와 내용을 탐구하는 것이다. 그리고 본 논문은 한반도 통일에 대한 북한의 붕괴⋅전쟁⋅평화적 방법에의한 세가지 시나리오를 설정해서 이 범주 내에서 미국과 중국의 한반도에 대한 정책적 선택과 상호행위 작용을 분석해보는 것이며, 더 나아가 단기간 내에 미-중간 관계의 발전방향을 예측함으로서 본 논문은 한반도 통일과정에서 이해당사자인 한국과 미국 그리고 중국정부에 각각의 일정과 메모렌덤에 따라 통일과정에서 발생할 수 있는 약간의 전략적 적대감에 대한 경고성 의미를 제시하고져 한다.