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| 1 | Physical and mechanical properties of sandstone containing a single fissure after exposure to high temperatures显示文摘In order to investigate the physical and mechanical properties of sandstone containing fissures after exposure to high temperatures,fissures with different angles α were prefabricated in the plate sandstone samples,and the processed samples were then heated at 5 different temperatures.Indoor uniaxial compression was conducted to analyze the change rules of physical properties of sandstone after exposure to high temperature,and the deformation,strength and failure characteristics of sandstone containing fissures.The results show that,with increasing temperature,the volume of sandstone increases gradually while the quality and density decrease gradually,and the color of sandstone remains basically unchanged while the brightness increases markedly when the temperature is higher than 585 ℃;the peak strength of sandstone containing fissures first decreases then increases when the temperature is between 25℃and 400℃.The peak strain of sandstone containing fissures increases gradually while the average modulus decreases gradually with increasing temperature,and the mechanical properties of sandstone show obvious deterioration after 400 ℃.The peak strain of sandstone containing fissures increases gradually while the average modulus decreases gradually with increasing temperature;with increasing angle αof the fissure,the evolution characteristics of the macro-mechanical parameters of sandstone are closely related to the their own mechanical properties.When the temperature is 800 ℃,the correlation between the peak strength and average modulus of sandstone and the angle α of the fissure is obviously weakened.The failure modes of sandstone containing fissures after high temperature exposure are of three different kinds including:tensile crack failure,tensile and shear cracks mixed failure,and shear crack failure.Tensile and shear crack mixed failure occur mainly at low temperatures and small angles;tensile crack failure occurs at high temperatures and large angles. | Zhu Tantan Jing Hongwen Su Haijian Yin Qian Du Mingrui Han Guansheng | 2016 | International Journal of Mining Science and Technology2016，26，2： | 15 |
| 2 | Fracture evolution characteristics of sandstone containing double fissures and a single circular hole under uniaxial compression显示文摘The uniaxial compression experiments on the sandstone samples containing double fissures and a single circular hole were carried out by using electro-hydraulic servo universal testing machine to investigate the effect of rock bridge angle β and fissure angle α on mechanical properties and evolution characteristics of cracks.The results show that the peak strength,peak strain and elastic modulus of defected specimens decrease comparing with those for intact sample,and show a decreased trend firstly and then increase with β changing from 0° to 90°.The peak strength and elastic modulus achieve the minimum value as the rock bridge angle is 60°,while the peak strain reaches the minimum value with the rock bridge angle of 45°.The crack initiation of tested rock samples occurs firstly in stress concentration areas at tips of prefabricated fissures under uniaxial compression,and then propagates constantly and coalescences with the prefabricated hole.Some secondary cracks initiate and propagate as well until buckling failure happens.The rock bridge angle has a great influence on crack initiation,coalescence,final failure mode,crack initiation stress and transfixion stress.The peak strength varies significantly,while the elastic modulus and peak strain change slightly,and the failure modes are also different due to the influence of fissure angle. | Chen Minliang Jing Hongwen Ma Xiujun Su Haijian Du Mingrui Zhu Tantan | 2017 | International Journal of Mining Science and Technology2017，27，3： | 11 |
| 3 | Cable-truss supporting system for gob-side entry driving in deep mine and its application显示文摘In order to solve the large deformation controlling problem for surrounding rock of gob-side entry driving under common cable anchor support in deep mine, site survey, physical modeling experiment, numerical simulation and field measurement were synthetically used to analyze the deformation and failure characteristics of surrounding rock. Besides, applicability analysis, prestress field distribution characteristics of surrounding rock and the control effect on large deformation of surrounding rock were also further studied for the gob-side entry driving in deep mine using the cable-truss supporting system. The results show that, first, compared with no support and traditional bolt anchor support, roof cable-truss system can effectively restrain the initiation and propagation of tensile cracks in the roof surrounding rock and arc shear cracks in the two sides, moreover, the broken development of surrounding rock, roof separation and extrusion deformation between the two sides of the roadway are all controlled; second, a prestressed belt of trapezoidal shape is generated in the surrounding rock by the cable-truss supporting system, and the prestress field range is wide. Especially, the prestress concentration belt in the shallow surrounding rock can greatly improve the anchoring strength and deformation resisting capability of the rock stratum;third, an optimized support system of ‘‘roof and side anchor net beam, roof cable-truss supporting system and anchor cable of the narrow coal pillar' was put forward, and the support optimization design and field industrial test were conducted for the gob-side entry driving of the working face 5302 in Tangkou Mine, from which a good supporting effect was obtained. | Yin Qian Jing Hongwen Dai Dapeng Zhu Tantan Zhao Honghui Meng Bo | 2016 | International Journal of Mining Science and Technology2016，26，5： | 3 |
| 4 | The template-assisted zinc ion incorporation in SAPO-34 and the enhanced ethylene selectivity in MTO reaction显示文摘The SAPO-34 catalyst was fine-tuned with zinc cations through a straightforward template-assisted ion incorporation (TH) process, without the necessary template pre-removal and the preparation of NH4- SAPO-34 intermediate, which is more facile, efficient and cost-effective than the conventional ion exchange process. The template-assisted zinc cations incorporated SAPO-34 catalysts were characterized by XRD, XRF, N2 adsorption-desorption, XPS, SEM, EDX,NMR, respectively. Enhanced selectivity to ethylene and ratio of ethylene to propylene in MTO reaction are observed over the zinc cations modified SAPO-34 catalysts, due to the facilitated formation of lower methylbenzenes that favour the ethylene gen eration, as well as the increased diffusion hindrance originated from the zinc cations incorporation and the facil让ated generation of aromatics compound. | Jiawei Zhong Jingfeng Han Yingxu Wei Shutao Xu Tantan Sun Xinwen Guo Chunshan Song Zhongmin Liu | 2019 | Journal of Energy Chemistry2019，28，5： | 2 |
| 5 | The update of prostatic ductal adenocarcinoma显示文摘Since initially described in 1967, prostatic ductal adenocarcinoma(PDA) has engendered a series of controversies on its origin, histological features, and biological behavior. Owing to the improvement of molecular biological technique, there are some updated findings on the characteristics of PDA. In the current review, we will mainly analyze its origin, clinical manifestations, morphological features, differential diagnosis, immunophenotype and molecular genetics, with the purpose of enhancing recognition of this tumor and making a correct diagnosis and treatment choice. | Tantan Liu Yingmei Wang Ru Zhou Haiyang Li Hong Cheng Jing Zhang | 2016 | Chinese Journal of Cancer Research2016，28，1： | 1 |
| 6 | Response to the comments on the article ' Performanceevaluation of automated nucleated red blood cell enumeration on Sysmex XN analyser' (IJLH -10 -14 -0363 ) 显示文摘 | Tantanate C | 2015 | Int J Lab He- matol2015，37，4： | 1 |
| 7 | A File Fragment Classification Method Based on Grayscale Image显示文摘 | Tantan Xu Ming Xu Yizhi Ren Jian Xu Haiping Zhang Ning Zheng | 2014 | Journal of Computers2014，，8： | 1 |
| 8 | Effects of Different Potassium (K) Fertilizer Rates on Yield Formation and Lodging of Rice显示文摘As one of the most important nutrients for plants,potassium(K)has substantial effects on growth and development of crops.Present study was conducted in three different sites in South China in late season in 2019 with the objective to study the effects of different applied amounts of K fertilizer on yield formation and lodging of rice.Four K fertilizer treatments,K_(0):0 kg potassium oxide(K_(2)O)ha^(−1)(control);K_(1):64.20 kg K_(2)O ha^(−1);K_(2):128.55 kg K_(2)O ha^(−1) and K_(3)153.90 kg K_(2)O ha^(−1) were applied in the field experiment.The results showed that K_(2) and K_(3) treatments significantly increased panicle number per unit area,grain number per panicle,seed-setting rate and the grain yield of rice compared with K_(0) treatment.Higher net photosynthetic rates were recorded in K_(2) and K_(3) treatments than K_(0) treatment at tillering stage,heading stage and maturity stage.K fertilizer treatments also increased the chlorophyll content and dry matter accumulation by 6.16–23.52%and 21.32–64.59%compared with K_(0) treatment,respectively.Moreover,the total N and K accumulation in the aboveground tissues of rice significantly increased under K_(2) and K_(3) treatments compared with K_(0) treatment.Furthermore,compared with K_(0) treatment,K fertilizer treatments significantly enhanced the breaking-resistant strength by 40.94–144.24%and reduced the lodging index of rice by 13.14–36.72%. | Tantan Zhang Xiaoping He Binglin Chen Longxin He Xiangru Tang | 2021 | Phyton-International Journal of Experimental Botany2021，90，3： | 1 |
| 9 | Conversion of CO_(2) and H_(2) into propane over InZrO_(x) and SSZ-13 composite catalyst显示文摘Direct converting carbon dioxide into hydrocarbon fuels and value-added chemicals would offer a very attractive approach for efficient utilization of CO_(2) as a carbon resource.Although,olefins,aromatics and gasoline have been successfully synthesized by CO_(2) hydrogenation,highly selective conversion of CO_(2) and H_(2) into C_(2+)hydrocarbon is still challenging due to a high C-C coupling barrier and inhibiting the production of other long-chain hydrocarbons.Here,we report a composite catalyst made of InZrO_(x) and SSZ-13 molecular sieve(InZrO_(x)+SSZ-13),which exhibits 74.5% propane selectivity at 623 K.The 8-MR micropores and the higher strength of the acid for SSZ-13 benefit the formation of propane.Compared with pure InO_(x) and m-ZrO_(2) the composite oxide InZrO_(x) containing more oxygen vacancies,exhibits to be more readily reduced by H_(2) and easier to adsorb and desorb CO_(2) within the reaction temperature.All those could be beneficial to the activation and conversion of H_(2) and CO_(2).The catalytic performance of InZrO_(x)+SSZ-13 in CO_(2) hydrogenation provides a potential for production of propane. | Zhaopeng Liu Youming Ni Tantan Sun Wenliang Zhu Zhongmin Liu | 2021 | Journal of Energy Chemistry2021，30，3： | 1 |
| 10 | Impacts of Disk Rock Sample Geometric Dimensions on Shear Fracture Behavior in a Punch Shear Test显示文摘Punch shear tests have been widely used to determine rock shear mechanical properties but without a standard sample geometric dimension suggestion.To investigate the impacts of sample geometric dimensions on shear behaviors in a punch shear test,simulations using Particle Flow Code were carried out.The effects of three geometric dimensions(i.e.,disk diameter,ratio of shear surface diameter to disk diameter,and ratio of disk height to shear surface diameter)were discussed.Variations of shear strength,shear stiffness,and shear dilatancy angles were studied,and the fracture processes and patterns of samples were investigated.Then,normal stress on the shear surface during test was analyzed and a suggested disk geometric dimension was given.Simulation results show that when the ratio of the shear surface diameter to the disk diameter and the ratio of disk height to the shear surface diameter is small enough,the shear strength,shear stiffness,and shear dilatancy angles are extremely sensitive to the three geometric parameters.If the ratio of surface diameter to disk diameter is too large or the ratio of disk height to surface diameter is too small,a part of the sample within the shear surface will fail due to macro tensile cracks,which is characterized by break off.Samples with a greater ratio of disk height to shear surface diameter,namely when the sample is relatively thick,crack from one end to the other while others crack from both ends towards the middle.During test,the actual normal stress on the shear surface is greater than the target value because of the extra compressive stress from the part of sample outside shear surface. | Tantan Zhu Yao Li | 2021 | Computer Modeling in Engineering & Sciences2021，，2： | 0 |
| 11 | 被优点打败显示文摘有一位美丽的模特,她有一头如绸缎般的长发,在几次大赛上,她利用这头美发演绎中国古典服装,大获成功,夺得了不少金奖。
又一个大赛来了,这次是国际性的大赛,如果能在大赛上取胜,那么她将与模特公司签约,跨入名模行列。
比赛前,她围绕自己的头发和设计师设计了多种时装,进行了上千次的台步训练,她自感完美无缺了。 | 流沙 tantan | 2015 | 文学少年(中学)2015，0，6： | 0 |
| 12 | 过去预测机显示文摘迄今为止,发明狂宫内三郎发明过各种各样稀奇古怪的东西,可是一样也没卖出去过。作为最后的一次赌注,宫内三郎花费5亿日元巨资,耗尽了心血,发明了一种高明的机器。
机器终于问世了。宫内三郎把自己的各种资料输入机器中。他想查询的是,当时如果他进了那家公司,现在会是什么样子呢?机器的显示屏显示:"一年后你因为顶撞领导,被解雇了。"宫内三郎喃喃自语道:"不错,不错,我本来就是个急性子嘛,幸亏当时我没去那家公司。 | 古贺牧彦 tantan | 2015 | 文学少年(中学)2015，0，6： | 0 |
| 13 | 在心里画一个春天显示文摘解析:心是一扇无形的窗,有的人全然敞开,有的人却紧紧关闭,于是每个人的生命便有了不同的色彩,有的人的生活充满阳光,有的人却在黑暗中孤独徘徊。如果世界是一座城堡,关爱就是带来光明的一扇窗;如果世界是一艘船,那么关爱就是茫茫大海上的灯塔。 | 罗伟 tantan | 2015 | 文学少年(中学)2015，0，6： | 0 |
| 14 | 一个人所能改变的显示文摘弗兰克·梅菲尔德博士正在参观历史悠久的蒂克斯伯里克福利院,临出门时他不小心撞上了一个年老的清洁女工。为了掩饰尴尬,博士随口问道:"您在这儿工作多久了?"女工回答:"福利院一创办我就来了。""哦?那您能给我讲讲这儿的历史吗?"博士问。"我不会讲什么,倒是可以带您看一看。"清洁工说着把博士领到了这座古老建筑物的最底层——阴暗潮湿的地下室。那里有数间囚笼似的小牢房,上面的铁栅早已锈迹斑斑。 | 刘宇婷 tantan | 2015 | 文学少年(中学)2015，0，6： | 0 |
| 15 | 顷刻之间显示文摘隆冬的早晨,空气中蒙着一层薄霜,像是给这个原本就富有传奇色彩的冬披上了一层灰蒙蒙的面纱。我匆匆下楼时,不经意间,竟看到了从层层阴云中透射而下的几缕阳光,阴云之上的太阳,光芒如此耀眼,只过半晌,便撕开云层,将一层仅存的薄雾,染得金灿灿,仿若佛陀降世。沐浴在晨曦中,我仿佛沐浴在佛教的极乐世界里,不自主地回味着过去。太阳一旦出来,便迅速占据山岗、丛林,以及这片水泥砌成的城。 | 彭思飏 tantan | 2015 | 文学少年(中学)2015，0，6： | 0 |
| 16 | 中国历代花鸟画赏析显示文摘春天是雨的魔法,一不留神,光秃秃的树枝吐出了绿芽,粉白的花骨朵迎风摇曳。还有比春天更讨人喜欢的季节吗?百花争艳的春天,赏花最是不能辜负。本文将带大家欣赏中国历代花鸟画的干娇百艳。 | tantan | 2018 | 记者观察(上)2018，0，4： | 0 |
| 17 | 919路巴士上的康乃馨显示文摘1我不知道在这个世界上还有没有比开公交车更加糟糕的职业,况且我走的是一条路况很差的线路,开的是一辆行将报废的破车。我每天都要在这条异常颠簸的环城线路上来回往返三趟,沿途除了灰尘四起的工地和几家破败不堪的工厂之外,再没什么值得一看的风景,所以,你完全可以想象,我的生活是多么的单调而乏味。 | 于小鱼 tantan | 2015 | 文学少年(中学)2015，0，7： | 0 |
| 18 | 想起了那纷飞的落叶显示文摘又到了秋天,枫叶红了,银杏叶黄了。风儿吹过,漫天的树叶仿佛纷飞的蝴蝶,在空中翩翩起舞。“蝴蝶”的环绕把我拉回了那片杨树林……一条“白色的丝绸”滑入了杨树林,片刻后,凄凉的哭声传来……那,是爷爷永归极乐世界的日子。我凝视着泥土渐渐覆盖上那实木的盒子,总觉得这一切都来得那么突然。 | 富诗涵 tantan | 2015 | 文学少年(中学)2015，0，7： | 0 |
| 19 | 流浪人剧场显示文摘6月,初夏。茂盛的树木被风吹着,叶子翻滚,显出耀眼白光。天空那样蓝,到处都那样明媚。路旁的牵牛花紧闭花瓣,仿佛睡着了。喷泉在跳舞,伴着悠扬的乐声。今天是星期日。阿珍背着书包,走进地下通道。那里凉爽昏暗,点着灯。她长长地舒了一口气,在弹吉他的女人面前停下来。那是个短发女人,很瘦。20多岁,穿深色衬衫和牛仔裤。她左手在指板上跳来跳去,右手扫弦,弹奏得游刃有余。而且,她在唱歌。歌声在地下通道里飘荡,人们走进来,又走出去,歌声就飘进他们的耳朵。 | 小触角 tantan | 2015 | 文学少年(中学)2015，0，8： | 0 |
| 20 | 柔弱的人显示文摘前几天,我曾把孩子的家庭教师尤丽娅·瓦西里耶夫娜请到我的办公室来,为她结算一下工钱。我对她说:“请坐,尤丽娅·瓦西里耶夫娜,让我们算算工钱吧!您也许要用钱,你太拘泥礼节,自己是不肯开口的……呶……我们和您讲妥,每月30卢布……”“40卢布……”“不,30……我这里有记载,我一向按30付教师的工资的……呶,您待了两个月……” | 契诃夫 tantan | 2015 | 文学少年(中学)2015，0，8： | 0 |
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