Distributed cooperative communication nodes control and optimization reliability for resource-constrained WSNs

Liu, Xiao,Liu, Anfeng,Li, Zhetao,Tian, Shujuan,Choi, Young-june,Sekiya, Hiroo,Li, Jie Elsevier 2017 Neurocomputing Vol.270 No.-

<P><B>Abstract</B></P> <P>The utilization of distributed control and optimization is still a challenge issue to achieve reliable communication for resource-constrained networked systems. In this paper, a distributed cooperative communication nodes control (DCCNC) approach is proposed to achieve higher reliability communication and longer network lifetime for resource-constrained wireless sensor network (WSNs). A DCCNC scheme adopts feedback control approach to determine the appropriate number of node which participates in cooperative communication according to the application reliability requirements. A residue energy notification mechanism is used to notice the minimum residual energy of nodes in a network, then the number of cooperative communication nodes is adjusted according to the difference between the residual energy of nodes and the minimum residual energy of network. In a DCCNC scheme, larger number of participate cooperative communication nodes are adopted in non-hotspots area to achieve high reliability, while less number of participate cooperative communication nodes are adopted in hotspots area to achieve high network lifetime. The theoretical analysis and experimental results show that comparing with previous communications schemes, DCCNC scheme can reduce end to end Data Fail delivering Ratio (DFR) by 57.16–93.29% while retaining network lifetime, and DCCNC approach can also improves lifetime by 3.89–18.75% while retaining weighted end to end (DFR).</P>

A Novel e8a2BCR-ABL1 Fusion Transcript without Insertion Sequence in a Patient with Chronic Myeloid Leukemia

Caibao Jin,Xiaojian Zhu,Min Xiao,Songya Liu,Xian Liu,Jingjing Liu,Xiuwen Xu,Shujuan Yi,Li Meng 대한진단검사의학회 2018 Annals of Laboratory Medicine Vol.38 No.2

Chronic myeloid leukemia (CML) is a clonal hematopoietic stem cell disorder characterized by a reciprocal translocation between the long arms of chromosomes 9 and 22, resulting in the formation of a Philadelphia (Ph) chromosome. Most chimeric BCR-ABL1 fusion transcripts are e13a2(b2a2) or e14a2(b3a2), encoding a 210-kDa protein, p210, but some are a e1a2 transcript or e19a2 transcript encoding a 190-kDa protein or a 230-kDa protein, respectively [1]

Spectrometric Determination of Rhodamine B in Chili Powder After Molecularly Imprinted Solid Phase Extraction

Liu, Xiuying,Zhang, Xuan,Zhou, Qian,Bai, Bing,Ji, Shujuan Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.11

This paper reports a method using molecularly imprinted polymers that are grafted onto the surface of carboxyl-modified multi-walled carbon nanotubes as the solid-phase extraction adsorbents to detect Rhodamine B in chili powder samples. The polymers were characterized by FTIR and TGA. Various parameters which probably influence efficiency of extraction were optimized. The analytical parameters such as precision, accuracy and linear working range were also determined in optimal experimental conditions. And the proposed method was applied to analysis of Rhodamine B in chili powder samples. The limits of detection and quantification were 2.57 and 8.56 ${\mu}g/g$, respectively. The recoveries for analytes were higher than 95% and relative standard deviation values were found to be in the range of 0.83-4.15%. This method was successfully applied for the determination of Rhodamine B.

Life cycle emissions of greenhouse gas for ammonia scrubbing technology

Shujuan Wang,Fang Liu,Changhe Chen,Xuchang Xu 한국화학공학회 2007 Korean Journal of Chemical Engineering Vol.24 No.3

is thought that the CO2 emissions from coal-fired power plants contribute greatly to the total anthropo-genic CO2 emissions. Ammonia solvent can be used to absorb the CO2, caled amonia scrubbing. However, as hasbeen pointed out, the production of ammonia would emit CO2; therefore, the efectiveness of amonia scrubbing isdoubted. The paper focuses on the problem. Two systems are defined in the paper. System I is CO2 absorption by am-2 emissions of the twosystems are calculated by means of life cycle asessment. The paper shows that the total CO2 emissions of ammoniascrubbing are less than that of the industrial production of fertilizer ammonium bicarbonate. It can be concluded thatammonia scrubbing is an effective way to reduce the anthropogenic CO2 emissions.

Oxalate formation during hydrogen peroxide-reinforced oxygen delignification

Yingying Liu,Shujuan Ge,Youming Li,Bingyun Li,Hailong Li 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.58 No.-

The effects of different process parameters (alkali dosage, hydrogen peroxide dosage, temperature, reaction time, and oxygen pressure) on oxalate formation during hydrogen peroxide-reinforced oxygen delignification (OP) of Eucalyptus kraft pulp were investigated in the present study. The relationships between oxalate formation and the dosages of both alkali and peroxide were found to be almost linear. Oxalate formation could be divided into “fast” and “slow” periods, depending on the reaction time. The best selectivity for the OP process was achieved using an alkali dosage of 2.0%, a hydrogen peroxide dosage of 2.0%, a temperature of 100 °C, an oxygen pressure of 0.6 MPa and a reaction time of 60 min. Oxalate formation was also, to some extent, reduced under these conditions. These results will be very helpful in optimizing the OP process, controlling oxalate formation and improving product quality.

Spectrometric Determination of Rhodamine B in Chili Powder After Molecularly Imprinted Solid Phase Extraction

Xiuying Liu,Xuan Zhang,Qian Zhou,Bing Bai,Shujuan Ji 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.11

This paper reports a method using molecularly imprinted polymers that are grafted onto the surface of carboxylmodified multi-walled carbon nanotubes as the solid-phase extraction adsorbents to detect Rhodamine B in chili powder samples. The polymers were characterized by FTIR and TGA. Various parameters which probably influence efficiency of extraction were optimized. The analytical parameters such as precision, accuracy and linear working range were also determined in optimal experimental conditions. And the proposed method was applied to analysis of Rhodamine B in chili powder samples. The limits of detection and quantification were 2.57 and 8.56 μg/g, respectively. The recoveries for analytes were higher than 95% and relative standard deviation values were found to be in the range of 0.83-4.15%. This method was successfully applied for the determination of Rhodamine B.

Effect of Vacuum Thermal Annealing on a Molybdenum Bilayer Back Contact Deposited by Radio-Frequency Magnetron Sputtering for Chalcogenide- and Kesterite-Based Solar Cells

Xiaolei Liu,Hongtao Cui,Xiaojing Hao,Shujuan Huang,Gavin Conibeer 한국물리학회 2017 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.71 No.12

Molybdenum (Mo) thin films are still a dominant choice for the back contact layer of Cu(In,Ga)Se2 (CIGS) and Cu2ZnSnS4 (CZTS) solar cells. This paper presents a review of Mo back contacts for CIGS and CZTS solar cells, including the requirements for a good back contact, the reason for the choice of Mo, and post-treatment. Additionally, a Mo bilayer back contact was fabricated by varying the argon (Ar) pressure during sputtering to provide both low resistivity and good adhesion to the soda-lime glass substrate. The effects of vacuum thermal annealing on the electrical, morphological and structural properties of the Mo bilayer were also investigated. Vacuum thermal annealing was seen to densify the Mo bilayer, reduce the sheet resistance, and improve the bilayer’s adhesion to the soda-lime glass. The Mo bilayer back contact with a low sheet resistance of 0.132 / and strong adhesion was made for chalcogenide- and kesterite-based solar cells.

Five new species of Stenothemus Bourgeois from Guangxi, China (Coleoptera, Cantharidae)

Ge Shujuan,Liu Haoyu,Yang Xing-ke,Yang Yuxia 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3

Five new species of Stenothemus Bourgeois, 1907 from Guangxi, China are described, S. normalis sp. nov., S. flavicans sp. nov., S. nigripennis sp. nov., S. elongaticeps sp. nov. and S. maculaticollis sp. nov.. They are illus trated with habitus photos and aedeagi of males, also abdominal sternites VIII and internal genitalia of females. A key for the identification of the above species is provided.

Novel SSR Marker Development and Genetic Diversity Analysis of Cinnamomum Camphora Based on Transcriptome Sequencing

Yongda Zhong,Zhiting Li,Shujuan Liu,Aihong Yang,Lipan Liu,Yanqiang Li,Meng Xu,Faxin Yu 강원대학교 산림과학연구소 2018 강원대학교 산림과학연구소 학술대회 Vol.2018 No.09

Cinnamomum camphora (Lauraceae) is an evergreen broad-leaved tree and distributed in the south of China and Japan. This species has been widely cultivated in many countries because of its aromatic oils, insect-repellent effects and ornamental value. Despite its vast utilization and cultivation, little is known about its genetic diversity and population genetics. To date, only a few genomic simple sequence repeat (SSR) markers were developed in C. camphora and no genic-SSR primers were available yet. Thus, it is necessary to develop more genic-SSR markers, which will facilitate the genetic studies of Cinanamomum. In this study, a total of 74,289 simple sequence repeats (SSRs) were found in 56,124 unigenes, of which 14,225 unigenes contained more than one SSR locus. Among these SSR loci, the mono-nucleotide repeats were the most frequent, with a frequency of 61.14%, followed by 24.87% di-nucleotide repeats and 12.87% tri-nucleotide repeats. Twenty-one polymorphic SSR markers were developed and validated in 45 camphor trees. The 21 loci were further examined for genetic diversity of 38 provenances, 190 individuals in the whole natural distribution area of camphor tree in China. The results showed that 74 polymorphic sites were detected with average 2.74 polymorphic were detected for each prime. The means of observed and expected heterozygosities were 0.4446 and 0.4419, respectively. Nei's and Shannon’s information index for these populations were 0.4400 and 0.7193, respectively. The genetic similarity coefficient of 38 provenances was between 0.05 and 0.95, with an average of 0.17.The smallest genetic distance is JXWY and JXRJ and the genetic distance between JXTG and GZDZ was the largest. Cluster analysis in 0.88 genetic distance can divide into five groups. Jiangxi provenances clustered into two groups, of which JXAY grouped into one group and other provenances grouped into another group. Other provenances of China grouped three small branches: CQYY and HNHH, GZDZ and SCLZ, and other provenances. The clustering results showed that the genetic components of camphor tree in China had obvious regional features. The analysis of molecular variance exhibited that 77% of genetic variation was observed within the populations. The novel genic-SSR markers will not only benefit genetic diversity analysis and wild resources conservation of C. camphora, but also contribute to exploring the further evolutionary history and genetic differentiation pattern of Cinnamomum.

Metastatic pattern of ovarian cancer delineated by tracing the evolution of mitochondrial DNA mutations

Xu Zhiyang,Zhou Kaixiang,Wang Zhenni,Liu Yang,Wang Xingguo,Gao Tian,Xie Fanfan,Yuan Qing,Gu Xiwen,Liu Shujuan,Xing Jinliang 생화학분자생물학회 2023 Experimental and molecular medicine Vol.55 No.-

Ovarian cancer (OC) is the most lethal gynecologic tumor and is characterized by a high rate of metastasis. Challenges in accurately delineating the metastatic pattern have greatly restricted the improvement of treatment in OC patients. An increasing number of studies have leveraged mitochondrial DNA (mtDNA) mutations as efficient lineage-tracing markers of tumor clonality. We applied multiregional sampling and high-depth mtDNA sequencing to determine the metastatic patterns in advanced-stage OC patients. Somatic mtDNA mutations were profiled from a total of 195 primary and 200 metastatic tumor tissue samples from 35 OC patients. Our results revealed remarkable sample-level and patient-level heterogeneity. In addition, distinct mtDNA mutational patterns were observed between primary and metastatic OC tissues. Further analysis identified the different mutational spectra between shared and private mutations among primary and metastatic OC tissues. Analysis of the clonality index calculated based on mtDNA mutations supported a monoclonal tumor origin in 14 of 16 patients with bilateral ovarian cancers. Notably, mtDNA-based spatial phylogenetic analysis revealed distinct patterns of OC metastasis, in which a linear metastatic pattern exhibited a low degree of mtDNA mutation heterogeneity and a short evolutionary distance, whereas a parallel metastatic pattern showed the opposite trend. Moreover, a mtDNA-based tumor evolutionary score (MTEs) related to different metastatic patterns was defined. Our data showed that patients with different MTESs responded differently to combined debulking surgery and chemotherapy. Finally, we observed that tumor-derived mtDNA mutations were more likely to be detected in ascitic fluid than in plasma samples. Our study presents an explicit view of the OC metastatic pattern, which sheds light on efficient treatment for OC patients.