Changchun, China
Changchun, China

Jilin University is a leading national research university under the direct jurisdiction of China's Ministry of Education.Located in Changchun, the capital city of Jilin Province in Northeast China, the university has seven campuses in six districts which are home to thirty-nine colleges covering thirteen academic disciplines, including philosophy, international relations, economics, law, literature, education, history, science, engineering, agriculture, medicine, management, and military science. The University has thirteen disciplinary areas, six national key laboratories, and seven national bases for the development of basic science. Other resources include five research bases for humanities and social science, eleven key laboratories sponsored by the Ministry of Education and eleven by other ministries of Chinese government.Jilin University is one of the most prestigious "Top 10" universities in China, and has several research projects in automobile engineering, chemistry, computer science, electrical engineering and biology. JLU also provides undergraduate and graduate programs in law, literature, philosophy, medicine and veterinary science. It is one of the key universities involved in China's Project 985, Project 211 and Project 2011.Jilin University is a comprehensive and national key university. JLU offers a variety of degree programs. It has now 115 undergraduate programs, 192 Master's degree program, 105 doctoral degree programs, and seventeen post-doctoral programs. In 2003 the university enrolled 59,000 full-time students, including more than 10,000 graduate students. At present there are 6,540 faculty members, with twenty members of Chinese Academy of science and Chinese Academy of Engineering, 1270 full professors, and 1652 associate professors. Wikipedia.


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The present invention provides an adulterated peanut oil detector and an adulterated peanut oil detection method, and pertains to the technical domain of product analysis. The detector comprises a casing, a LCD and Return key, Enter key, Up key, Down key, a power switch, a power socket, and a USB interface arranged on the casing, and a microprocessor and a power supply unit mounted in the casing and electrically connected to the components on the casing, wherein, a module cover is arranged on the top surface of the casing, and a pretreatment module and a detection module are mounted in the space under the module cover. The pretreatment module comprises a heating body and cuvette slots, and the detection module comprises an axial fan, a radiating plate, a refrigerating plate, and cuvette slots. The detection method comprises sample preheating procedure and slow refrigeration procedure. The detector and method provided in the present invention can quickly and easily detect whether the peanut oil sample is adulterated and the percentage of adulteration, and is applicable to quick on-spot detection of rapeseed oil, sunflower oil, maize oil, cotton oil, palm oil, and soybean oil, etc. admixed in peanut oil.


The present invention provides an adulterated peanut oil detector and an adulterated peanut oil detection method, and pertains to the technical domain of product analysis. The detector comprises a casing, a LCD and Return key, Enter key, Up key, Down key, a power switch, a power socket, and a USB interface arranged on the casing, and a microprocessor and a power supply unit mounted in the casing and electrically connected to the components on the casing, wherein, a module cover is arranged on the top surface of the casing, and a pretreatment module and a detection module are mounted in the space under the module cover. The pretreatment module comprises a heating body and cuvette slots, and the detection module comprises an axial fan, a radiating plate, a refrigerating plate, and cuvette slots. The detection method comprises sample preheating procedure and slow refrigeration procedure. The detector and method provided in the present invention can quickly and easily detect whether the peanut oil sample is adulterated and the percentage of adulteration, and is applicable to quick on-spot detection of rapeseed oil, sunflower oil, maize oil, cotton oil, palm oil, and soybean oil, etc. admixed in peanut oil.


Li Y.,Jilin University | Yu J.,Jilin University
Chemical Reviews | Year: 2014

Spheres are attracted to each other when they are close, which ensures the close packing of spheres. Spheres also repel each other strongly if they overlap, ensuring the hardness of the spheres. At the beginning of the packing procedure, a small number of hexagonal close packed spheres are placed into the zeolite framework without overlapping any framework atom. An excess of spheres are supplied outside the unit cell. The concept of natural tiling can be one of the solutions. According to the theory of tiling, a three dimensional net can be decomposed into a number of face sharing, edge-sharing, and vertex-sharing three-dimensional polyhedral tiles. The way all of the tiles assemble together is the tiling of the net. By comparing the T-ring graphs corresponding to different probes, one can easily generate preliminary conclusions about the selectivity of mixtures of guest species corresponding to a specific zeolite framework.


Qiu S.,Jilin University | Xue M.,Jilin University | Zhu G.,Jilin University
Chemical Society Reviews | Year: 2014

Metal-organic framework (MOF) materials, which are constructed from metal ions or metal ion clusters and bridging organic linkers, exhibit regular crystalline lattices with relatively well-defined pore structures and interesting properties. As a new class of porous solid materials, MOFs are attractive for a variety of industrial applications including separation membranes-a rapidly developing research area. Many reports have discussed the synthesis and applications of MOFs and MOF thin films, but relatively few have addressed MOF membranes. This critical review provides an overview of the diverse MOF membranes that have been prepared, beginning with a brief introduction to the current techniques for the fabrication of MOF membranes. Gas and liquid separation applications with different MOF membranes are also included (175 references). This journal is © the Partner Organisations 2014.


Yang Y.-W.,Jilin University | Sun Y.-L.,Jilin University | Song N.,Jilin University
Accounts of Chemical Research | Year: 2014

ConspectusFor device miniaturization, nanotechnology follows either the "top-down" approach scaling down existing larger-scale devices or the "bottom-up' approach assembling the smallest possible building blocks to functional nanoscale entities. For synthetic nanodevices, self-assembly on surfaces is a superb method to achieve useful functions and enable their interactions with the surrounding world. Consequently, adaptability and responsiveness to external stimuli are other prerequisites for their successful operation. Mechanically interlocked molecules such as rotaxanes and catenanes, and their precursors, that is, molecular switches and supramolecular switches including pseudorotaxanes, are molecular machines or prototypes of machines capable of mechanical motion induced by chemical signals, biological inputs, light or redox processes as the external stimuli. Switching of these functional host-guest systems on surfaces becomes a fundamental requirement for artificial molecular machines to work, mimicking the molecular machines in nature, such as proteins and their assemblies operating at dynamic interfaces such as the surfaces of cell membranes. Current research endeavors in material science and technology are focused on developing either a new class of materials or materials with novel/multiple functionalities by shifting host-guest chemistry from solution phase to surfaces.In this Account, we present our most recent attempts of building monolayers of rotaxanes/pseudorotaxanes on surfaces, providing stimuli-induced macroscopic effects and further understanding on the switchable host-guest systems at interfaces. Biocompatible versions of molecular machines based on synthetic macrocycles, such as cucurbiturils, pillararenes, calixarenes, and cyclodextrins, have been employed to form self-assembled monolayers of gates on the surfaces of mesoporous silica nanoparticles to regulate the controlled release of cargo/drug molecules under a range of external stimuli, such as light, pH variations, competitive binding, and enzyme. Rotaxanes have also been assembled onto the surfaces of gold nanodisks and microcantilevers to realize active molecular plasmonics and synthetic molecular actuators for device fabrication and function. Pillararenes have been successfully used to control and aid the synthesis of gold nanoparticles, semiconducting quantum dots, and magnetic nanoparticles. The resulting organic-inorganic hydrid nanomaterials have been successfully used for controlled self-assembly, herbicide sensing and detection, pesticide removal, and so forth, taking advantage of the selective binding of pillarenes toward target molecules. Cyclodextrins have also been successfully functionalized onto the surface of gold nanoparticles to serve as recycling extractors for C 60. Many interesting prototypes of nanodevices based on synthetic macrocycles and their host-guest chemistry have been constructed and served for different potential applications. This Account will be a summary of the efforts made mainly by us, and others, on the host-guest chemistry of synthetic macrocyclic compounds on the surfaces of different solid supports. © 2014 American Chemical Society.


Liu Z.-Q.,Jilin University
Chemical Reviews | Year: 2010

Researchers conducted investigations to develop chemical methods for evaluating antioxidant ability. The researchers also introduced some biological materials as experimental materials in evaluating antioxidant capacity chemically. The first scheme demonstrated the mode for exploring antioxidant capacity who basis contained four factors. Substrates were compounds that were susceptible to oxidation and the microenvironment imitated the biological surroundings. The applications of erythrocytes, DNA, and LDL combined the substrate with the microenvironment. Treatment of the results from these biological samples with chemical kinetics revealed molecular information on the biological samples. Metal ions, and other oxidants were also applied to initiate the oxidation of chemical agents or biological samples to imitate oxidative stress, radical initiators, and UV radiation.


Liu Z.-Q.,Jilin University
Chemical Reviews | Year: 2012

The chemistry, biosynthesis, analysis, and tonic effects of ginsenosides were reviewed to gather information about ginseng as a resource for natural antioxidants. Investigations revealed that anticarcinogenic, immunomodulatory, anti-inflammatory, antiallergic, antiatherosclerotic, antihypertensive, antidiabetic, antistress, and anticancer activities of ginseng were due to the action of ginsenosides. The pharmacological action of ginseng was related to the abilities of ginsenosides to regulate enzyme expression, and more individual ginsenosides were needed for comparing pharmacological activity and for exploring the structure-activity relationships. Some chemicals, such as CO 2 and jasmonic acid were found to increase the contents of ginsenosides and other antioxidants. It was also observed that the treatment of Panax notoginseng with 2-hydroxyethyl jasmonate in a bioreactor increased the activities of protopanaxdiol 6-hydroxylase and Rd glucosyltransferase and changed the ratios of Rb/Rg and Rb1/Rd.


Patent
Jilin University | Date: 2016-02-08

A drive axle of electric distribution torque, comprise of: a drive motor having a output shaft for outputting torque; differential including differential housing, a drive shaft. the left and right drive half axle rotating about an axis of rotation; double row planetary gear mechanism outputting power of the motor output shaft which will be reduced two-stage; double planetary gear torque distribution mechanism connected to the double planetary gear reduction mechanism, receiving the double planetary gear reduction mechanism output torque, and outputs reverse torque in contrast to said torque; single row double planetary gear coupling mechanism providing opposite direction torque to the left and right axle. The electric drive axle with a torque orientation distribution function of the present invention can distribute the transmission of drive torque to both sides of the axles selectively, and when the torque is directional distributed, electric drive axle is willing to follow the best driver input, maintain driving speed cornering, increasing mobility and the drivers driving pleasure.


The present invention relates to a reusable water writing paper, as well as to its production process and an inkless printing device thereof. The reusable water writing paper is consisted of a substrate as structure-support material, a color-displaying component supported on the substrate, and an optional performance-enhancing additive, wherein the color-displaying component is an oxazoline-based hydrochromic dye, which can change color obviously to display characters and/or patterns after contacting with water, and revert to the initial color to disappear the displayed characters and/or patterns after the water is removed, thereby the water writing paper is reusable. The paper is not only suitable for the exercise of writing or drawing with a brush pen, but also can be used for daily writing with a pen. Furthermore, inkless printing also can be achieved by spraying water.


The present invention discloses a strip soil loosening and crushing mechanism of a no-tillage planting machine. The machine has a connecting bracket, a star-shaped cutter head assembly, and a soil crushing wheel assembly. The star-shaped cutter head assembly has two star-shaped cutter heads with the same structure, which are symmetrically arranged at outer sides of the two supporting plates by star-shaped cutter head fixing shafts. The soil crushing wheel assembly has a spring combined structure, a soil crushing wheel combined structure and two crank brackets rotatably connected at the outer sides of the two supporting plates of the connecting bracket by a connecting shaft.

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