Short-span interleaving based selected mapping

A novel interleaving based selected mapping （SLM） scheme to depress the relatively high peak power of transmit signals in multicarrier communications is proposed. In the scheme, a group of bit-level interleavers spanning only a few bits are used to produce multiple sequences representing the same information, and one of the sequences resulting in the lowest peak-to-average power ratio （PAPR） is selected for transmission. The implementation of the scheme including the structure of the short-span interleaver is illustrated. The performance of this PAPR reduction scheme is investigated by simulations. This scheme exhibits a good PAPR reduction performance, and for signals of high level modulation, such as 16QAM and 64QAM, it approaches the best performance of all SLM schemes. Compared to the conventional interleaving SLM, this short-span interleaving SLM results in a very short time delay, requires very few register units for buffering, and can be easily implemented by hardware.

Growth performance and physiological parameters of the second generation selected and control groups of Pinctada martensii

In May of 2007,the second generation selected （SS） and control （SC） groups of pearl oyster Pinctada martensii were established by selecting 10% breeders with the largest and mean shell length,respectively,from the first generation selected group.Growth performance of the SS and SC groups were compared on the basis of measurement data at Days 8,18,60,95,195 and 365.On Day 365,100 individuals （60.0–75.0 mm at shell length） were sampled from each group and then subjected to the experiment where physiological parameters such as filtrate rate,oxygen consumption and ammonia excretion were measured at 15,20,25 and 30°C.The results show that the SS group had significantly larger mean shell length and shell height than the SC group at Days 8,18,60,95,195 and 365 （P 0.05）.The genetic gains at different ages varied from 6.0% to 17.0% for shell length and 5.7% to 14.6% for shell height,respectively.At 15,20,25 and 30 ° C,the SS groups had significantly larger filtrate rate than the SC group （P 0.05）.At 15 and 25 °C,the differences in oxygen consumption rate between the SS and SC groups were not significant （P 0.05）.At 20 and 30 °C,however,the oxygen consumption rate of the SS group was significantly larger than the SC group （P 0.05）.At 15,20,25 and 30 °C,there were no significant differences in ammonia excretion rate between the SS and SC groups （P 0.05）.The present results indicate that there existed considerable genetic variability in the base population and a further selection could be likely fruitful.Mass selection for faster growth might produce animals that had higher intake of metabolizable energy by virtue of faster filtrating behavior.

Investigating on casting mold (or core) making with coated sand by the selected laser sintering

Using a special coated sand as the material of the selected laser sintering (SLS), the authors test and investigate the strength change of the test samples in terms of different sintering parameters (scanning speed, laser power, sintering thickness, and so on). The characteristics of coated sand hardening by laser beam are analyzed. The sintered mold (or core) for given casting is poured with molten metal.

Accuracy analysis of the part made by selected laser sintering

The effects of different factors, including the precision of selected laser sintering (SLS) equipment, sintering temperature, sintered thickness of individual layer and laser scanning route, on the SLS part accuracy have been analyzed and studied. Some measures are suggested in order to improve the part accuracy made by SLS.

Positively selected genes of the Chinese tree shrew （Tupaia belangeri chinensis） locomotion system

While the recent release of the Chinese tree shrew （Tupaia belangeri chinensis） genome has made the tree shrew an increasingly viable experimental animal model for biomedical research, further study of the genome may facilitate new insights into the applicability of this model. For example, though the tree shrew has a rapid rate of speed and strong jumping ability, there are limited studies on its locomotion ability. In this study we used the available Chinese tree shrew genome information and compared the evolutionary pattern of 407 locomotion system related orthologs among five mammals （human, rhesus monkey, mouse, rat and dog） and the Chinese tree shrew. Our analyses identified 29 genes with significantly high co （Ka/Ks ratio） values and 48 amino acid sites in 14 genes showed significant evidence of positive selection in the Chinese tree shrew. Some of these positively selected genes, e.g. HOXA6 （homeobox A6） and AVP （arginine vasopressin）, play important roles in muscle contraction or skeletal morphogenesis. These results provide important clues in understanding the genetic bases of locomotor adaptation in the Chinese tree shrew.

S. E. M. analysis of quartz sand grains from selected Hong Kong and Chinese littoral environments

This pilot study attempts to demonstrate some underlying scanning electron microscopy themes of quartz grain surface textures. A variety of textural patterns and individual features are described for grains selected from various littoral environments. An attempt was made to differentiate samples on surface textures alone, but limitations of using this technique in sedimentological isolation were apparent. Statistical analysis of checklist data and photographic evidence revealed some of the more important feature combinations used in environmental diagnosis. The use of discriminant analysis provided quantitative sample separation.

Liver transplantation benefits selected patients with hilar cholangiocarcinoma and colorectal liver metastases

Hilarcholangiocarcinoma(HCCA)isanaggressivemalignancy with a dismal prognosis. The 5-year survival rate has been reported to range from 39%to 50%if an R0 resection is obtained [1]. Approximately 25%patients with early stage HCCA of all cases can be treated with radical surgical resection [2], while most patients do not have a chance to receive a surgical procedure due to the advanced stage at the time of diagnosis. The poor prognosis is gen-

Special issue on selected papers from HVDP 2018

This special issue contains the selected papers from the 2018 National Conference on High Voltage and Discharge Plasmas (HVDP 2018) in Nanjing, China, 12-14October, hosted by the Committee of Plasmas and Applications, China Electrotechnical Society. Over 650 participates from more than 150 universities, research institutes, and enterprises all over China attended the conference and delivered 458presentations, including 32 invited talks, 260 oral presentations and 196 posters.This well-established event provides a full scale assembly of contributions from areas of high voltage, pulsed power technology as well as basic theories and applications of discharge plasma.

Immunomodulatory effects of selected Malaysian plants on the CD18/11a expression and phagocytosis activities of leukocytes

Objective:To investigate the effects of 20 methanolic extracts from Malaysian selected plants on CD18/11 a expression and phagocytosis activity of leukocytes using flow cytometry analysis.Methods:The effects of methanolic extracts on CD18/11 a expression and phagocytosis of leukocytes were measured by labelling the cells with CD18-fluorescein isolhiocyanaie and ingestion labelled with Escherichia coli-fluorescein isothiocyanate and then analyzed using flow cytometer.Results:About 12 out of 20 methanolic extracts of selected Malaysian medicinal plants significantly(P≤0.05) inhibited the CD18/1 la expression of leukocytes at both concentrations of 6.25 μg/mL and 100 μg/mL in dose dependent manner.The most active inhibitory was shown in Citrus aurantifolia(Christm.) Swingle and Alpinia galangal(L.) Willd.at dosage 100ug/mL.Moreover,the Orthosiphon aristatus(Blume) Miq(O.aristatus).showed the highest stimulatory activity at the concentration of 100 μg/mL.Other than that,four plant extracts significantly(P<0.05) rose the phagocytosis activities of leukocytes in dose dependent manner.However,Annona muricata L.and O.aristatus showed the highest stimulated activities at the 100 pg/mL concentration.Conclusions:The results suggest that methanolic extracts of Cirrus aurantifolia.Alpinia gaiangal,O.aristatus and Annona muricata are able to modulate innate immune system and can potentially be recognized as therapeutic agents for modulating immune system.

Abstracts Selected from Naihuo Cailiao(Refractories)——A Bimonthly in Chinese

Volume 52,Number 5,2018 Effects of different alumina-containing micropowders on properties of in-situ mullite-bonded SiC porous ceramic membrane support/Luo Zhiyong,Liu Kaiqi,Han Wei,Ao Wenqing,Xiao Lij u n//Naihuo Cailiao.-201 8,52(5):321Abstract:This work aims at reducing the production cost of ceramic membrane support.

EVALUATION OF SPECTRAL SELECTED PRESS SEQUENCE IN BREAST LESION CHARACTERIZATION

Objective To evaluate the role of ^1H spetral selected point-resolved spectroscopy （SS-PRESS） sequence in distingnishing benign from malignant breast lesions by the malignancy marker of choline peak and to investigate the factors influencing the diagnosis. Methods A total of 131 patients （ aged 24-83 years, average 44. 8 years） were enrolled in this study. The examinations were performed on a 1.5T scanner with four-channel phased array breast coiL Singie-voxel proton magnetic resonance spectroscopy （1H MRS） was acquired by SS-PRESS sequence in these patients referred to surgical or biopsy consultation. Results Among these patients, 74 were proved to have breast carcinomas and 57 have benign lesions by histopathological examinations, Thirty-one elevated choline peaks were observed in these 74 confirmed malignant lesions, and 5 detectable choline peaks were demonstrated in the 57 benign lesions. The sensitivity and specificity of ^1H SSPRESS MRS were 41.9% and 91.2%, respectively. The main factors influencing the diagnosis were signal-to-noise ratio and pathological type. Conclusions ^1H SS-PRESS MRS can provide a noninvasive, biochemical measurement of metabolism and improve the specificity of breast magnetic resonance imaging. Choline peak in vivo is a specific but not sensitive marker of malignancy. Technique factors and histopathological characterization of lesions influence the detection rate.

Abstracts Selected from Naihuo Cailiao (Refractories)——A Chinese Language Bimonthly

Volume 50,Number 6,2016Thoughts for development of China＇s refractories industry-Reviewing＂the 12thFive-Year-Plan＂and prospecting＂the 13thFive-Year-Plan＂/Xu Dianli//Naihuo Cailiao.-2016,50（6）：401Abstract：The production,operating,import and export state,and achievement of China＇s refractories during＂the 12-（th）Five-Year-Plan＂period were reviewed.

Abstracts Selected from Naihuo Cailiao(Refractories)——A Bimonthly in Chinese

Volume 52, Number 3, 2018Dynamic rheology characteristics of MgO slurry/Duan Hongjuan,XueAndang,Fan Suxiao,Huang Liang,Zhang Haijun,Zhang Shaowei,Wang Zhiming,Liao Shibiao//Naihuo Cailiao.-2018,52(3):161Abstract:In order to control the hydration reaction of MgO for its use as binder in high quality cement-free castables,the rheology characteristics of MgO slurry were determined by the dynamic rheology medium and small oscillation method.The micro-network structure formation and development of hydration products in MgO slurries with MgO,silica fume,ρ-Al2O3 and extra 0.3%admixtures (boric acid,citric acid,and acetic acid)were studied.The results show that the storage modulus model G’of MgO slurry increases signif-icantly to the maximum with the time firstly-then levels off. The curve of G’-t reflects the MgO hydration structure development.

A Comparative Study on the Selected Area Electron Diffraction Pattern of Fe Oxide/Au Core-shell Structured Nanoparticles

The selected area electron diffraction （SAED） pattern of magnetic iron oxide core/gold shell nanoparticles has been studied. For the composite particles with mean size less than 10 nm, their SAED pattern is found to be different from either the pattern of pure Fe oxide nanoparticles or that of pure Au particles. Based on the fact that the ring diameters of these composite particles fit the characteristic relation for the fcc structure, the Au atoms on surfaces of the concerned particles are supposed to pack in a way more tightly than they usually do in pure Au nanoparticles. The driving force for this is the coherency strain which enables the shell material at the heterostructured interface to adapt the lattice parameters of the core.

Abstracts Selected from Naihuo Cailiao(Refractories)——A Chinese Language Bimonthly

Volume 51,Number 1,2017 Influence of firing temperature on properties of cordierite ceramics from sol-gel synthesized powders/Zhang Hui,Xue Qunhu,Ma Lijian//Naihuo Cailiao.-2017,51（1）：1Abstract：This work aims at decreasing the sintering temperature of industrial cordierite ceramics.

Abstracts Selected from Naihuo Cailiao(Refractories)——A Chinese Language Bimonthly

Abstract： A ZrO2-ZrSiO4 metering nozzle sample with non-homogeneous microstructure was locally melted by semiconductor laser irradiation with power of 700 W in order to study the effect of laser on the surface of zirconia refi＇actory. The microstructure change of the sample before and after the irradiation was observed by FESEM. The XRD and EDS were used to identify phase composition and chemical composition, respectively.

Abstracts Selected from Naihuo Cailiao(Refractories)——A Chinese Language Bimonthly

China＇ s refractories industry in the ＂new normal＂ phase/Xu Dianli//Naihuo Cailiao. -2015, 49（4） ：241 Abstract：The developing state of China＇s refractories industry and its predominance and position in the global refractories market were and opportunities of China were pointed out. introduced. The pressure ＇s refractories enterprises

Abstracts of Selected Articles on metals Published in China

92A0025 Saturation of Preferential Sites forNucleation and Growth of Ferrite Phase at EarlyStages of Austenite Decomposition in Low-carbonBoron Steels The microstructural evolutionpath at early stages of austenite decomposition at620℃ in low-carbon boron steels has been investi-