Fluid-enhanced surface diffusion controls intraparticle phase transformations

Li, Yiyang,Chen, Hungru,Lim, Kipil,Deng, Haitao D.,Lim, Jongwoo,Fraggedakis, Dimitrios,Attia, Peter M.,Lee, Sang Chul,Jin, Norman,Moš,kon, Jož,e,Guan, Zixuan,Gent, William E.,Hong, Jihyun,Yu Springer Science and Business Media LLC 2018 Nature Materials Vol.17 No.10

Towards efficient sharing of encrypted data in cloud-based mobile social network

( Xin Sun ),( Yiyang Yao ),( Yingjie Xia ),( Xuejiao Liu ),( Jian Chen ),( Zhiqiang Wang ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.4

Mobile social network is becoming more and more popular with respect to the development and popularity of mobile devices and interpersonal sociality. As the amount of social data increases in a great deal and cloud computing techniques become developed, the architecture of mobile social network is evolved into cloud-based that mobile clients send data to the cloud and make data accessible from clients. The data in the cloud should be stored in a secure fashion to protect user privacy and restrict data sharing defined by users. Ciphertext-policy attribute-based encryption (CP-ABE) is currently considered to be a promising security solution for cloud-based mobile social network to encrypt the sensitive data. However, its ciphertext size and decryption time grow linearly with the attribute numbers in the access structure. In order to reduce the computing overhead held by the mobile devices, in this paper we propose a new Outsourcing decryption and Match-then-decrypt CP-ABE algorithm (OM-CP-ABE) which firstly outsources the computation-intensive bilinear pairing operations to a proxy, and secondly performs the decryption test on the attributes set matching access policy in ciphertexts. The experimental performance assessments show the security strength and efficiency of the proposed solution in terms of computation, communication, and storage. Also, our construction is proven to be replayable choosen-ciphertext attacks (RCCA) secure based on the decisional bilinear Diffie-Hellman (DBDH) assumption in the standard model.

Correction to: Solvothermal preparation of CeO2 nanoparticles–graphene nanocomposites as an electrochemical sensor for sensitive detecting pentachlorophenol

Yang Man,Chen Yiyang,Wang Haitao,Zou Yilun,Wu Pingxiu,Zou Jing,Jiang Jizhou 한국탄소학회 2022 Carbon Letters Vol.32 No.7

Pentachlorophenol (PCP), as one of the common pesticide and preservatives, is easily accumulated in living organisms. Considering the high toxicity of PCP, the development of an effective and sensitive inspection method to determine the residual trace amounts of PCP continues to be a significant challenge. Herein, a convenient and sensitive electrochemical sensor is constructed by modifying glassy carbon electrode with cerium dioxide (CeO2) nanoparticles anchored graphene (CeO2-GR) to detect trace PCP. Benefiting from the two-dimensional lamellar structural advantages, the extraordinary electron-transfer properties, as well as the intensive coupling effect between CeO2 nanoparticles and graphene, the afforded CeO2-GR electrode nanomaterial possesses excellent electrocatalytic activity for the oxidation of PCP. Under the optimum synthetic conditions, the PCP oxidation peak currents of developed CeO2–GR sample exhibit a wide linear range of 5–150 μM. Moreover, the corresponding detection limit of PCP on the CeO2–GR electrode is as low as 0.5 μM. Apart from providing a promising electrochemical sensor, this work, most importantly, promotes an efficient route for the construction of highly active sensing electrode materials.

Solvothermal preparation of CeO2 nanoparticles–graphene nanocomposites as an electrochemical sensor for sensitive detecting pentachlorophenol

Yang Man,Chen Yiyang,Wang Haitao,Zou Yilun,Wu Pingxiu,Zou Jing,Jiang Jizhou 한국탄소학회 2022 Carbon Letters Vol.32 No.5

Pentachlorophenol (PCP), as one of the common pesticide and preservatives, is easily accumulated in living organisms. Considering the high toxicity of PCP, the development of an effective and sensitive inspection method to determine the residual trace amounts of PCP continues to be a significant challenge. Herein, a convenient and sensitive electrochemical sensor is constructed by modifying glassy carbon electrode with cerium dioxide (CeO2) nanoparticles anchored graphene (CeO2-GR) to detect trace PCP. Benefiting from the two-dimensional lamellar structural advantages, the extraordinary electron-transfer properties, as well as the intensive coupling effect between CeO2 nanoparticles and graphene, the afforded CeO2-GR electrode nanomaterial possesses excellent electrocatalytic activity for the oxidation of PCP. Under the optimum synthetic conditions, the PCP oxidation peak currents of developed CeO2–GR sample exhibit a wide linear range of 5–150 μM. Moreover, the corresponding detection limit of PCP on the CeO2–GR electrode is as low as 0.5 μM. Apart from providing a promising electrochemical sensor, this work, most importantly, promotes an efficient route for the construction of highly active sensing electrode materials.

Advances in plant-derived natural products for antitumor immunotherapy

Yi Yang,Qinying Liu,Xianai Shi,Qiuhong Zheng,Li Chen,Yang Sun 대한약학회 2021 Archives of Pharmacal Research Vol.44 No.11

In recent years, immunotherapy has emergedas a novel antitumor strategy in addition to traditional surgery,radiotherapy and chemotherapy. It uniquely focuses onimmune cells and immunomodulators in the tumor microenvironmentand helps eliminate tumors at the root by rebuildingthe immune system. Despite remarkable breakthroughs,cancer immunotherapy still faces many challenges: lack ofpredictable and prognostic biomarkers, adverse side eff ects,acquired treatment resistance, high costs, etc. Therefore,more effi cacious and effi cient, safer and cheaper antitumorimmunomodulatory drugs have become an urgent requirement. For decades, plant-derived natural products obtainedfrom land and sea have provided the most important sourcefor the development of antitumor drugs. Currently, moreattention is being paid to the discovery of potential cancerimmunotherapy modulators from plant-derived naturalproducts, such as polysaccharides, phenols, terpenoids, quinonesand alkaloids. Some of these agents have outstandingadvantages of multitargeting and low side eff ects and lowcost compared to conventional immunotherapeutic agents.

Safety and antifatigue effect of Korean Red Ginseng capsule: A randomized, double-blind and placebo-controlled clinical trial

Yi Yang,Hong Wang,Ming Zhang,Mengxue Shi,Cailing Yang,Qiang Ni,Qi Wang,Jing Li,Xuemei Wang,Chen Zhang,Zhi Li 고려인삼학회 2022 Journal of Ginseng Research Vol.46 No.4

Background: In physical activity or labor, the human body is in a state of high intensity stress, and allparts or physiological functions of the body respond positively to maintain or balance the need formovement. The human body has many physiological changes in the process of movement, and fatigue isthe external manifestation of various complex changes inside the human body. Fatigue is also a physiologicalmechanism of self-protection after the body reaches a certain level of activity, which can preventthe occurrence of life-threatening excessive functional failure. The generation of fatigue is a very complexprocess, and its mechanism has not been concluded yet. Therefore, it is an important work to search andscreen the effective components of natural plants that have anti-fatigue effect and to explore theirmechanism. Methods: This was a 8-week, randomized, double-blind, placebo-controlled clinical trial. A total of 110subjects who passed physical examination were included according to the scheme design, and randomlydivided into a test group which was given KRG and a placebo control group. The calculation is carried outaccording to the standard of sub-high-intensity exercise test. Results: There was no adverse effect on safety index of subjects after taking red ginseng capsule. AfterKRG treatment, subjective strength grade is significant lower than placebo treatment. Blood lactic acidcontent is significantly get lower after trial in KRG group, and significant lower than placebo group. Creatine phosphokinase(CK) content is significantly get lower after trial in KRG group, and significantlower than placebo group. Conclusion: According to the criterion in the test scheme, the result shows that KRG is helpful onrelieving physical fatigue.