周华建、喜纳昌吉、《花心》

我国流行歌手周华建演唱的《让我欢喜让我忧》《朋友》《花心》等等作品，都是当今华人圈中脍炙人口的流行歌曲。由于他的演唱刚柔相济，声情并茂，其歌唱技术与情感的完美结合，准确地演绎了一首首优秀的歌曲。因此，喜欢周华建演唱风格的人们遍及各个年龄阶层。

《花心》两种流行唱法版本比较研究

《花心》是一首20世纪90年代的流行歌曲。这首歌采用日本电影《山丹之塔》主题曲《花》的旋律,由台湾诗人厉曼婷重新填词,台湾著名流行音乐歌手周华健首唱,台湾著名摇滚歌手苏见信翻唱。周版《花心》意为花朵的心,歌词乐观积极,演唱优美坚毅,配器柔美温润,整首歌充满着希望和正能量,是一个时代的经典;苏版《花心》指在爱情里人的花心,歌词迷幻颓废,演唱嘲讽愤怒,配器金属摇滚,充满日式摇滚风味,是经典基础上的经典翻唱。

Macro-meso fracture evolution mechanism of hollow cylindrical granite with different hole diameters under conventional triaxial compression

In order to study and analyze the stability of engineering rock mass under non-uniform triaxial stress and obtain the evolution mechanism of the whole process of fracture,a series of conventional triaxial compression tests and three-dimensional numerical simulation tests were carried out on hollow granite specimens with different diameters.The bearing capacity of hollow cylindrical specimen is analyzed based on elasticity.The results show that:1)Under low confining pressure,the tensile strain near the hole of the hollow cylindrical specimen is obvious,and the specimen deformation near the hole is significant.At the initial stage of loading,the compressive stress and compressive strain of the specimen are widely distributed.With the progress of loading,the number of microelements subjected to tensile strain gradually increases,and even spreads throughout the specimen;2)Under conventional triaxial compression,the cracking position of hollow cylinder specimens is concentrated in the upper and lower parts,and the final fracture mode is generally compressive shear failure.The final fracture mode of complete specimen is generally tensile fracture.Under high confining pressure,the tensile cracks of the sample are concentrated in the upper and lower parts and are not connected,while the cracks of the upper and lower parts of the intact sample will expand and connect to form a fracture surface;3)In addition,the tensile crack widths of intact and hollow cylindrical specimens under low confining pressure are larger than those under high confining pressure.

Genetic Diversity Analysis and Constructing Core Collection Based on Phenotypes in Cotton

In that DNA diversity detected nowadays could not mean phenotypic diversity,it is the precondition of breeding project and basic research of crop improvement that genetic diversity analysis and sampling of core collection by phenotypes.Phenotyping and statistic analysis on 9 traits of 92 accessions of cotton germplasm resource from three species（Gossypium hirsutum L.,Gossypium barbadence L.and Gossypium arboreum L.）were conducted.And the statistics（variation coefficient,proportion of special accessions and Shannon-Weaver information index）indicated that initial collection had abundant phenotypic diversity;software NTSYS-pc and the unweighted pair group method of arithmetic（UPGMA）were used for the cluster analysis on genetic similarity coefficient and genetic distance matrix,and the result showed that the genetic relationship among accessions was highly consistent with the pedigree;22 accessions of core collection were selected by software QGAStation,four statistics,such as variance difference percentage（VD%）,mean difference percentage（MD%）,coincidence rate（CR%）and variable rate（VR%）,showed that the genetic diversity of core collection was approximately equal to the initial collection.The results of genetic diversity analysis based on phenotypic data and sampling of core collection would provide reference for breeding projects and basic research.

黄来铎画廊

黄来铎画廊、黄来铎艺术工作室成立于1995年,经营面积约200平方米。主要推出黄先生的油画作品。黄来铎的画不受情节、题材的束缚,强调整体意蕴的渲染,充分发挥绘画语言——色彩、笔触的价值,其取向在于音乐性而不在文学性。黄来铎的风景画。

Effect of overnight temperature on leaf photosynthesis in seedlings of Swietenia macrophylla King

After exposure of one-year old seedlings of Swietenia macrophylla to an overnight temperature (13 C, 19 C, 25 C, 31 C or 35 C), the leaf net photosynthetic rate (Pn) was researched through measuring photosynthetic light-response curves at 360 mmolmol-1 CO2, and photosynthetic CO2-response curves at light-saturated intensity (1500 mmolm-2 s-1). The optimal temperature for photosynthesis measured at 360 mmol穖ol-1 CO2 was from 25 C to 31 C, but which was from 31C to 35 C at saturating CO2 concentration. At temperature of below 25 C, the decline in Pn was mainly due to the drop in carboxylation efficiency (Ce), while as temperature was over 31 C, the reduction in Pn resulted from both decrease in Ce and increase in leaf respiration. The CO2-induced stimulation of photosynthesis was strongly inhibited at temperatures below 13 C. The results showed that, the leaf photosynthesis of tropical evergreen plants should not be accelerated at low temperature in winter season with elevated CO2 concentration in the future.

Comparison of stem taper models for the four tropical tree species in Mount Makiling, Philippines

This study was conducted to evaluate the performance of six stem taper models on four tropical tree species, namely Celtis luzonica(Magabuyo),Diplodiscus paniculatus(Balobo), Parashorea malaanonan(Bagtikan), and Swietenia macrophylla(Mahogany) in Mount Makiling Forest Reserve(MMFR), Philippines using fit statistics and lack-of-fit statistics. Four statistical criteria were used in this study, including the standard error of estimate(SEE),coefficient of determination(R^2), mean bias( E),and absolute mean difference(AMD). For the lack-offit statistics, SEE, E and AMD were determined in different relative height classes. The results indicated that the Kozak02 stem taper model offered the best fit for the four tropical species in most statistics. The Kozak02 model also consistently provided the best performance in the lack-of-fit statistics with the best SEE, E and AMD in most of the relative height classes. These stem taper equations could help forest managers and researchers better estimate the diameter of the outside bark with any given height,merchantable stem volumes and total stem volumes of standing trees belonging to the four species of thetropical forest in MMFR.

Antioxidant Activity of Isothiocyanate Extracts from Broccoli

Isothiocyanates(ITCs) extracts were prepared from fresh broccoli.Their antioxidant properties were evaluated by using the in vitro bioassays,including superoxide anion radical( 2 O·-) ,hydroxyl radical(HO·-) and 2,2-diphenyl-1-picrylhydracyl(DPPH·) radical-scavenging methods,lipid peroxidation assay,and reducing power assay.The ITCs extracts exhibited significant dose-dependent antioxidant activities(P<0.01) .Its antioxidant-stability was affected by temperature and storage condition,although it was more stable than vitamin C(Vc) .GC-MS iden-tified sulforaphane in the ITCs extracts.The antioxidant activity of sulforaphane was approximately one tenth to one fifth of that of Vc.Sulforaphane was experimented to be one of dominating contributors to antioxidant capacity of ITCs extracts.However,there was no direct antioxidant activity found for benzyl isothiocyanate(BITC) in vitro. Therefore,it could be concluded that the general group(-N=C=S) was not the essential part for the antioxidant activity of sulforaphane.It is suggested that the ITCs extracts from broccoli can be developed into a promising food additive for healthy food.

Cost Implications of Biodegradation of Khaya Grandifoliola （Dry Land Mahogany） by Aspergillus in Residential Buildings

Degradation of timbers in building due to microorganisms was reported to cause enormous economic loses and species of Aspergillus are among the major cause of degradation of timbers in Nigeria. This research aims at evaluating the cost of implications of biodegradations of Khaya grandifoliola by Aspergiilus spp in residential buildings empirically. Decayed Khaya grandifoliola samples were collected on residential buildings to extract, cultivate and identify the Aspergillus spp present. The cultivation went through serial dilutions and inoculations on sabouraud dextrose agar in petri dishes before incubation for 72 hours at 30 ~C. The species were identified through visual and microscopic observations. Percentage rate of degradation was determined under laboratory conditions by inoculating known weights of Khaya grandifoliola with the Aspergillus and incubating in a minimal medium for 24 weeks at 30 ~C. Weight loses and spore counts were recorded at four weeks intervals. A pattern of the degradation was forecasted. Accumulative weight loss of 16% for this period was obtained. Methods and costs of repair and replacement of decayed portions were evaluated. Residential Buildings constructed of Khaya grandifoliola experienced low cost of maintenance in this region but may not be in wetter regions where the conditions could be more favorable.

Preliminary Study on Tissue Culture Technique of Brassica campestris L. ssp. chinensis (L.) Makino var. utilis

In order to establish a rapid propagation system for Brassica campestris L. ssp. chinensis var. utilis, the anther and cotyledon-cotyledonary petioles were used as explants to conduct tissue culture research. The results showed that not bloomed flower buds with higher styles than petals were appropriate for anther cul- ture. Moreover, most microspores were at the mid-late uninucleate stage at that time. The pollen germination rates of Brassica campestris L. ssp. chinensis var. u- tills were low and the germination rates in autumn and winter were higher than that in summer. The induction medium of anther callus of Brassica campestris L. ssp. chinensis var. utilis was MS＋1.0 mg/L KT＋1.0 mg/L 2, 4-D＋3% sugar＋6 g/L agar＋ 8% coconut milk and the induction media of adventitious bud were MS＋2.0 mg/L 6-BA＋ 0.5 mg/L NAA＋I.0 g/L activated carbon＋2% sugar＋6 g/L agar or MS＋2.0 mg/L ZT＋ 0.5 mg/L IAA＋0.5 g/L AgNO3＋1.0 g/L activated carbon＋2% sugar＋6 g/L agar. The induction percentage of adventitious bud by anther culture was 36.7%. Browning phenomenon appeared during the culture of adventitious bud and regeneration plant could not be formed. The plant regeneration rate reached 80% when cotyledon- cotyledonary petioles were used as explant.

Analysis of Urbanization Based on Center-of-gravity Movement and Characteristics in Songhua River Basin of China and its Southern Source Sub-basin between 1990 and 2010

Urbanization in modern times led to a series of development strategies that brought new opportunities in China. Rapid urbanization caused severe stress to the ecosystems and the environment. Using the center-of-gravity(COG) method and parameters such as population, economy, and land, we studied the urbanization pattern in Songhua River Basin and its southern source sub-basin from 1990 to 2010. Urbanization was analyzed based on the COG position, eccentric distance, movement direction of COG, and distance of COG movement. Various characteristics of urbanization in the southern source sub-basin of the Songhua River were explained in relation to the whole Songhua River Basin. Urbanization in the southern source sub-basin of the Songhua River is balanced, relatively advanced, and stable compared to the whole Songhua River Basin. The average eccentric distance between the urbanization COGs in the Songhua River′s south source basin indicated rapid expansion of land urbanization during the span of this study. A basic pattern of urbanization COG in the whole Songhua Basin was observed, but there existed differences among the three aspects of urbanization process. Land urbanization is still in its active stage, so future studies should focus on analysis of such urbanization trends.

Effects of ouabain on ultrastructure and function in rat heart

Objective: To investigate the ouabain's effects on the ultrastructure and function of the rat heart. Methods: Male Sprague-Dawley (SD) rats were treated with ouabain and systolic blood pressure (SBP) were recorded weekly. After 4 weeks, echocardiography was performed, hemodynamic parameters were measured by invasive cardiac catheterization and changes in heart ultrastructure were analyzed using transmission electron microscopy. Results:After treated by ouabain for 4 weeks, there were no significant differences in the mean SBP of the two groups. However, cardiac systolic and diastolic performances were both worsened with ouabain treatment by echocardiography, left ventricular chamber diameters and wall thickness were significantly increased in the rats of ouabain group. Invasive monitoring indicated that left ventricular systolic pressures (LVSP), rate of pressure development (+dp/dt) and rate of pressure decay (-dp/dt) were significantly attenuated and left ventricular end-diastolic pressures (LVEDP) were increased in ouabain group (P<0. 05). Disorganization of myofilaments, mitochondrial swelling, disruption and vacuolation, hyperplastic collagen fibers were found in ouabain group by transmission electron microscopy. Conclusion:It is suggested that ouabain induces alterations in cardiac ultrastructure and function, and the effects happened before the increase of blood pressure, which indicates that ouabain might damage rat heart independent of blood pressure.

花心

油菜花开出故乡晴朗的春天，大片大片的金黄点缀着乡村朴素的笑颜．淹没了丝丝缕缕的沧桑。就是田野间偶尔一座看守的草棚，也成了一道难得的风景。

Ventricular remodeling by Scutellarein treatment in spontaneously hypertensive rats

OBJECTIVE: To observe reversal of ventricular remodeling by the protein kinase C inhibitor Scutellarein in spontaneously hypertensive rats (SHRs). METHODS: Twelve SHRs were randomly divided into two groups. Scutellarein and saline (10 mg x kg(-1) x d(-1)) were given by intraperitoneal injection to two groups of rats separately. Systolic blood pressure (SBP) and ventricular weight index (LVW/BW, RVW/BW) were measured. A polarization microscope and an image analyzer system (IAS) were used to observe changes in cardiovascular structure and to count the content of cardiac muscle interstitial collagen. RESULTS: The pathologic changes in the left ventricle in the Scutellarein group rats (SHR(D)) improved to varying degrees, including hypertrophy of the cardiac muscle and collagen volume fraction. CONCLUSION: Scutellarein can reverse ventricular remodeling, improve myocardial stiffness and protect heart cardiac muscle.

Forget-me-not： Complex floral displays, inter-signal interactions, and pollinator cognition

Flowers are multisensory displays used by plants to influence the behavior of pollinators. Although we know a great deal about how individual signal components are produced by plants and detected or learned by pollinators, very few experiments directly address the function of floral signal complexity, i.e. how the multicomponent nature of these signals benefits plant or pollinator. Yet, experimental psychology suggests that increasing complexity can enhance subjects＇ ability to detect, learn and remember stimuli, and the plant＇s reproductive success depends upon ensuring that pollinators learn their signals and so transport pollen to other similar （conspecific） flowers. Here we explore functional hypotheses for why plants invest in complex floral displays, focusing on hypotheses in which floral signals interact to promote pollinator learning and memory. Specifically, we discuss how an attention-altering or context-providing function of one signal may promote acquisition or recall of a second signal. Although we focus on communication between plants and pollinators, these process-based hypotheses should apply to any situation where a sender benefits from enhancing a receiver＇s acquisition or recall of information .