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Simplified Scheme for Teleportation of a Multipartite Quantum State Using a Single Entangled Pair

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Communications in Theoretical Physics 2009年第2期51卷 235-238页

作者： yan li-hua GAO Yun-Feng School of Physical Science and Information Engineering Liaocheng University Liaocheng 252059 China School of Medium and Communications Liaocheng University Liaocheng 252059 China

Abstract A simple scheme for teleporting an unknown M-qubit cat-like state is proposed. The steps of this scheme can be summarized simply： disentangle-teleport-reconstruct entanglement. If proper unitary operations and measurements from senders are given, the teleportation of an unknown M-qubit cat-like state can be converted into single qubit teleportation. In the meantime, the receiver should also carry out right unitary operations with the introduction of appropriate ancillary qubits to confirm the successful teleportation of the demanded entangled state. The present scheme can be generalized to teleport an unknown M-quNit state, i.e., an M-quNit state can be teleported by a single quNit entangled pair.

关键词： teleportation EPR pair M-qubit cat-like state quNit entangled pair M-quNit cat-like state

Effect of linear Electromagnetic Stirring on Behavior of liquid Metal and Rate of Slag-Metal Interfacial Reactions

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Journal of Iron and Steel Research International 2010年第8期17卷 10-14页

作者： li yan-hua SU Zhi-jian HE Ji-cheng Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials Northeastern University Shenyang 110004 Liaoning China

The internal flow,free surface shape,and level fluctuation of liquid metal exposed to linear electromagnetic stirring were measured and analyzed against the background of an actual metallurgical equipment with linear electromagnetic stirring *** desulphurization process,with or without imposition of linear electromagnetic stirring,was also studied *** changes in sulfur content of hot metal with respect to time were obtained,and the volumetric mass transfer coefficients corresponding to different stirring currents were *** results showed that linear electromagnetic stirring can effectively promote internal flow,effectively increase the level fluctuation,and significantly improve the kinetic condition of liquid *** internal flow and level fluctuation of liquid metal increase in line with the increase in electromagnetic stirring *** desulphurization experiments show that linear electromagnetic stirring can significantly promote the desulphurization process of hot metal,and that the technology has wide application potential in promoting various slag-metal reactions.

关键词： linear electromagnetic stirring Doppler ultrasound velocimetry internal flow level fluctuation interfacial reaction

Erythropoietin Receptor Gene (EPOR) Polymorphisms are Associated with Sow litter Sizes

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Agricultural Sciences in China 2011年第6期10卷 931-937页

作者： ZHANG Long-chao WANG li-gang li Yong yan hua ZHAO Ke-bin WANG li-xian Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing 100193 P.R. China

The erythropoietin receptor （EPOR） has shown to play an important role in fetal survival by promoting the maturation of red blood cells in many studies of uterine capacity and litter size in swine. In this study, we screened the porcine EPOR gene for mutations and identified five single nucleotide polymorphisms （SNPs）： g.705G〉T in intron 1, g.2 373C〉T in intron 4, and g.2 882C〉T, g.3 035A〉G, and g.3 132A〉T in intron 6. We then genotyped 247 Beijing Black （BB） sows and compared the polymorphism data with the litter sizes of 1 375 parities among the sows. At first parity, there was no association of g.2 882C〉T and g.3 132A〉T with litter sizes. However, the CT sows in g.2 882C〉T had 2.13 higher total number born （TNB）（P〈0.01） and 1.81 higher number born alive （NBA）（P〈0.01） than the CC sows and the heterozygous sows in g.3 132A〉T had the highest litter size when compared to the two homozygotes for the later parities （P〈0.05）. In the g.3 035A〉G SNP, for the later parities, the TNB of the sows with the GG genotype was 3.81 higher （P〈0.01） and the NBA was 2.75 higher （P〈0.01） than that with the AA genotype but no difference at first parity. The G allele of the EPOR g.705G〉T SNP was associated with a greater litter size at both the first parity （P〈0.05） and later parities （P〈0.01）. Furthermore, we determined the allele frequencies for this SNP among five Chinese indigenous pig breeds （Erhualian, Laiwu Black, Meishan, Min, and Rongchang） and three western commercial pig breeds （Duroc, Landrace, and Large White）. The G allele of the EPOR g.705G〉T SNP was significantly more common in the more prolific Chinese breeds. These results indicated that the EPOR could be an important candidate gene for litter size and g.705G〉T can serve as a useful genetic marker for improving litter size in both first and later parities in swine.

关键词： erythropoietin receptor litter size pig single nucleotide polymorphism

N-acetylcysteine protects against cadmium-induced germ cell apoptosis by inhibiting endoplasmic reticulum stress in testes

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Asian Journal of Andrology 2013年第2期15卷 290-296,I0010页

作者： yan-li Ji hua Wang Cheng Zhang Ying Zhang Mei Zhao Yuan-hua Chen De-Xiang Xu Department of Toxicology School of Public Health Anhui Medical University Hefei 230032 China

Cadmium （Cd） is a reproductive toxicant that induces germ cell apoptosis in the testes. Previous studies have demonstrated that endoplasmic reticulum （ER） stress is involved in Cd-induced germ cell apoptosis. The aim of the present study was to investigate the effects of N-acetylcysteine （NAC）, an antioxidant, on Cd-induced ER stress and germ cell apoptosis in the testes. Male CD-1 mice were intraperitoneally injected with CdCl2 （2.0 mg kg^-1）. As expected, acute Cd exposure induced germ cell apoptosis in the testes, as determined by terminal dUTP nick-end labelling （TUNEL）. However, the administration of NAC alleviated Cd-induced germ ceil apoptosis in the testes. Further analysis showed that NAC attenuated the Cd-induced upregulation of testicular glucose-regulated protein 78 （GRP78）, an important ER molecular chaperone. Moreover, NAC inhibited the Cd-induced phosphorylation of testicular eukaryotic translation initiation factor 2a （elF2a）, a downstream target of the double-stranded RNA-activated kinase-like ER kinase （PERK） pathway. In addition, NAC blocked the Cd-induced activation of testicular X binding protein （XBP）-1, indicating that NAC attenuates the Cd-induced ER stress and the unfolded protein response （UPR）. Interestingly, NAC almost completely prevented the Cd-induced elevation of C/EBP homologous protein （CHOP） and phosphorylation of c-Jun N-terminal kinase （.INK）, two components of the ER stress-mediated apoptotic pathway. In conclusion, NAC protects against Cd-induced germ cell apoptosis by inhibiting endoplasmic reticulum stress in the testes.

关键词： antioxidant apoptosis cadmium endoplasmic reticulum stress N-acetylcysteine (NAC) testis unfolded protein response

MUC1-positive circulating tumor cells and MUC1 protein predict chemotherapeutic efficacy in the treatment of metastatic breast cancer

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Chinese Journal of Cancer 2011年第1期30卷 54-61页

作者： Jian-Ping Cheng Ying yan Xiang-Yi Wang Yuan-li Lu yan-hua Yuan Jun Jia Jun Ren Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) Peking University School of Oncology Department of Medical Oncology Beijing Cancer Hospital & Institute Beijing 100142 P. R. China.

Chemotherapy plays an important role in the treatment of metastatic breast cancer. It is important to monitor chemotherapeutic efficacy, to find a simple and efficient tool to guide treatment, and to predict the efficacy of treatment in a timely and accurate manner. This study aimed to detect mucin-1 (MUC1) - positive circulating tumor cells and MUC1 protein in the peripheral blood of patients with metastatic breast cancer and to investigate their relationship to chemotherapeutic efficacy. MUC1 mRNA was detected in the peripheral blood of 34 patients with newly diagnosed metastatic breast cancer by reverse transcription- polymerase chain reaction. The positive rates of MUC1 mRNA were 88.2% before chemotherapy and 70.6% after chemotherapy, without a significant difference (P = 0.564); MUC1 mRNA expression before chemotherapy had no correlation with treatment effectiveness (P = 0.281). The response rate of MUC1 mRNA -negative patients after first-cycle chemotherapy was significantly higher (P = 0.009) and the progression-free survival (PFS) was clearly longer than those of MUC1 mRNA-positive patients (P = 0.095). MUC1 protein in peripheral blood plasma was detected by an EliSA competitive inhibition assay. The patients with decreased MUC1 protein after chemotherapy had a significantly longer PFS than those with elevated MUC1 protein (P = 0.044). These results indicate that the outcomes of MUC1 mRNA - negative patients after chemotherapy are better than those of MUC1 mRNA-positive patients. In addition, patients with decreased expression of MUC1 protein have a better PFS.

关键词： MUC1 治疗效果肿瘤细胞阳性率乳腺癌转移性粘蛋白化疗

Assessment on Phosphorus Efficiency Characteristics of Soybean Genotypes in Phosphorus-Deficient Soils

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Agricultural Sciences in China 2008年第8期7卷 958-969页

作者： PAN Xiang-wen li Wen-bin ZHANG Qiu-ying li yan-hua liU Ming-shan Key Laboratory of Black Soil Ecology Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Harbin 150081 P.R. China Key Laboratory of Soybean Biology Ministry of Education/Northeast Agricultural University Harbin 150030 P.R.China Agricultural Center of Wanlong Town Government Shuangcheng 150119 P.R.China

A glasshouse study compared the growth and phosphorus （P） efficiency of 96 genotypes of soybean [Glycine max （L.） Merrill] in a P-deficient soil. The soybean genotypes differed greatly in growth, nodulation and P uptake after growing in the soil for 45 days, with shoot biomass ranging from 0.91 to 1.75 g per plant. The application of P improved biomass production, nodulation and P uptake and decreased root to shoot ratio, root length and surface area and P utilization efficiency. The 96 soybean genotypes were divided into 3 categories in P efficiency using the principal component analysis and cluster analysis, and 4 categories according to F values in combination with growth potentials. The Pefficient genotypes were associated with high biomass production, root to shoot ratio, root length and surface area and P uptake but low shoot to root P concentration ratio under P deficiency. The results indicate that there is a substantial genotypic variation in P efficiency in existing germplasm, and that P efficiency was correlated positively with dry weights of shoots and roots, ratio of root to shoot dry weight, root length and surface area, root P content and total P uptake. The shoot dry weight under P deficiency and relative shoot dry weight （deficient P/adequate P supply） are effective and simple indicators for screening P-efficient genotypes at the seedling stage.

关键词： assessment phosphorus efficiency characteristics phosphorus-deficient soil soybean genotypes

Erythromycin Resistance of Streptococcus suis Isolates In Vivo

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Agricultural Sciences in China 2009年第4期8卷 502-507页

作者： JIANG Cheng-gang li yan-hua CAI Xue-hui QIU hua-ji TONG Heng-min liU Di-qiu LEI lian-cheng SUN Chang-jiang Division of Swine Infectious Diseases National Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research Institute Chinese Academy of Agricultural Sciences Harbin 150001 P.R. China Northeast Agricultural University Harbin 150030 P.R.China Husbandry and Veterinary Institute of Jilin University Changchun 130062 P.R.China

In order to study erythromycin resistance of Streptococcus suis under high or low concentration of selective drug pressure, Streptococcus suis strain LN was isolated from a diseased pig in 2005 and showed to be susceptible to erythromycin as determined by disc diffusion and tube dilution tests. In this study, clean level rabbits were divided into three groups of six rabbits each, including a prevention dosage group, a treatment dosage group, and a control group. After injection with S. suis strain LN, erythromycin （20 μg mL^-1） was taken orally in the prevention dosage group, erythromycin （5 mg kg^-1） was injected intramuscularly in the treatment dosage group, and no treatment was given in the control group. S. suis with intermediate resistance to erythromycin was isolated on the 5th day after infection from the prevention dosage group （5th PDG） and on the 7th day after infection from the treatment dosage group （7th TDG）. Both isolates were determined to be the constitutive macrolide-lincosamide-streptogramin B （cMLSB） resistance phenotype. The resistance gene ermB was detected in all of the isolates. The results suggested that both the 5th PDG and 7th TDG isolates had a mutation （A2372T） in the 23S rRNA gene. In addition, the 5th PDG isolates had a mutation in ribosomal protein L4 （detected as G268A） and a mutation in ribosomal protein L22 （A345C）; and the 7th TDG isolates had a C insertion at site 564. Each of these mutations is considered as a possible mechanism of erythromycin resistance in S. suis strain LN. This study demonstrated that erythromycin resistance was readily induced in S. suis at a low erythromycin dose creating selective pressure in vivo. Resistance appeared to be mediated by ribosome methylation, encoded by the ermB gene.

关键词： Streptococcus suis erythromycin in vivo resistance

Phase regulated suppression and enhancement switches of four-wave mixing and fluorescence

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Frontiers of physics 2014年第2期9卷 153-156页

作者： Zhi-Guo Wang Peng Ying Pei-Ying li hua-yan Lan He-Qing huang Hao Tian Jian-Ping Song yan-Peng Zhang Key Laboratory for Physical Electronics and Devices of the Ministry of Education Shaanxi Key Lab of Information Photonic Technique Xi'an Jiaotong University Xi'an 710049 China

We experimentally study the phase regulated switch between elcctromagnctically induced trans- parency and electromagmetically induced absorption in probe transmission signal and the conver- sion between enhancement and suppression in four-wave mixing and fluorescence signals for the first time. By changing the relative phase, electromagnetically induced transparency can be eonverted into electromagnetically induced absorption. In this process, the conversion from suppression to enhancement is also obtained in four-wave mixing and fluorescence signals. This research can be applied in non-linear optical device like optical switch and optical wavelength convertor.

关键词： four-wave mixing fluorescence phase regulation enhancement and suppression

Functional switching of ATM:sensor of DNA damage in proliferating cells and mediator of Akt survival signal in post-mitotic human neuron-like cells

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Chinese Journal of Cancer 2012年第8期31卷 364-372页

作者： yan li hua Xiong Da-Qing yang The Hormel Institute University of MinnesotaAustinMN 55912USA

Ataxia-telangiectasia(A-T) is an autosomal recessive disorder characterized by cerebellar ataxia and oculocutaneous *** gene mutated in this disease,ATM(A-T,mutated),encodes a 370-kDa Ser/Thr protein *** not only mediates cellular response to DNA damage but also acts as an activator of Akt in response to ***,despite intensive studies,the mechanism underlying the neuronal degeneration symptoms of human A-T is still poorly *** found that the topoisomerase inhibitors etoposide and camptothecin readily induced apoptosis in undifferentiated proliferating SH-SY5Y cells but could not induce apoptosis in neuronally differentiated SH-SY5Y *** addition,etoposide induced p53 phosphorylation and H2AX foci formation in proliferating SH-SY5Y cells but failed to do so in differentiated SH-SY5Y ***,while inhibition of ATM in undifferentiated SH-SY5Y cells partially protected them from etoposide-induced apoptosis,the same treatment had no effect on cell viability in differentiated SH-SY5Y *** results suggest that DNA damage or defective response to DNA damage is not the cause of neuronal cell death in human *** contrast,we discovered that Akt phosphorylation was inhibited when ATM activity was suppressed in differentiated SH-SY5Y ***,inhibition of ATM induced apoptosis following serum starvation in neuronally differentiated SH-SY5Y cells but could not trigger apoptosis under the same conditions in undifferentiated proliferating SH-SY5Y *** results demonstrate that ATM mediates the Akt signaling and promotes cell survival in neuron-like human SH-SY5Y cells,suggesting that impaired activation of Akt is the reason for neuronal degeneration in human A-T.

关键词：神经元样细胞 DNA损伤细胞增殖 ATM Akt SH-SY5Y细胞人类有丝分裂