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141.
R. Rajaraman 《Physics letters. [Part B]》1985,154(4):305-309
We construct the hamiltonian formulation of the anomalous chiral Schwinger model, which has recently been shown to yield a consistent unitary theory. The impact of the anomaly on the constraints of the system is exhibited and the system is quantized using an appropriate hamiltonian consistent with the constraints. 相似文献
142.
143.
Litov and Anderson after various considerations suggested a four constant potential function for a-Se as well as a-As2S3. Hence we also used a four constant potential function with the sole purpose of applying this potential function to obtain
several acoustic, thermodynamic and other properties. We calculated several acoustic properties of a-Se like second order
elastic constants (SOECs), their pressure derivatives, the longitudinal and transverse Grüneisen constant by two different
methods, phonon frequencies, absorption band position through the use of Nath-Smith-Delaunay’s equation, and the thermodynamic
properties like heat capacity, bulk modulus, thermal Grüneisen constant, the pressure derivative of the bulk modulus (dK
T/dP=C
1), the pressure derivative ofC
1 which is related to Anderson-Grüneisen parameter, pressure derivative of Grüneisen constant namelyγ′
g
which is related to second Grüneisen constant, characteristics of phonon frequencies, potential energy function through the
use of fitted parameters and third order elastic constants. Finally we calculatedK
T at the reduced density ofρ/ρ
0=1.1.K
T is obtained from the potential function with the fitted parameters. In all the above cases the calculated values are found
to be in good agreement with experiment wherever available. In this connection it is important to point out that we eliminated
‘C’ a constant in the potential function using the equilibrium condition as was done by Litovet al in a-Se and Gerlichet al in the case of a-As2S3 as all amorphous substances are isotropic as mentioned by several authors. We contemplate to calculate several other properties
for a-Se and a-As2S3 and present them at a later stage. 相似文献
144.
Ramesh B. Reddy Premansh Dudhe Priyanka Chauhan Sagnik Sengupta Venkatesh Chelvam 《Tetrahedron》2018,74(48):6946-6953
An efficient synthesis of N-Boc-tubuphenylalanine benzyl ester (N-Boc-Tup-OBn, 1a) and N-Boc-epi-tubuphenylalanine benzyl ester (N-Boc-epi-Tup-OBn, 1b) is reported herein. Regioselective aziridine 4 ring opening with carbon nucleophiles followed by hydroboration of 1,1-substituted aminoalkene 3 using 9-BBN and subsequent oxidation in an alkaline medium are used as the key steps to provide N-tosyl 1,4-aminoalcohols. The 1,4-aminoalcohols are successfully transformed into the desired products with an overall yield of 23% for 1a and 11% for 1b over 8 consecutive steps separately. 相似文献
145.
Hybrid Nanoreactors: Enabling an Off‐the‐Shelf Strategy for Concurrently Enhanced Chemo‐immunotherapy 下载免费PDF全文
Yannan Yang Dr. Jie Tang Dr. Prasanna Lakshmi Abbaraju Manasi Jambhrunkar Dr. Hao Song Min Zhang Dr. Chang Lei Jianye Fu Zhengying Gu Yang Liu Prof. Chengzhong Yu 《Angewandte Chemie (International ed. in English)》2018,57(36):11764-11769
Immunosuppressive tumors generally exhibit poor response to immune checkpoint blockade based cancer immunotherapy. Rationally designed hybrid nanoreactors are now presented that have integrated functions as Fenton catalysts and glutathione depletion agents for amplifying the immunogenic cell death and activating immune cells. A simple physical mixture of nanoreactors and chemodrugs in combination with immune checkpoint blockades show synergistically and concurrently enhanced chemo‐immunotherapy efficacy, inhibiting the growth of both treated primary immunosuppressive tumors and untreated distant tumors. The off‐the‐shelf strategy uses tumor antigens generated in situ and avoids cargo loading, and is thus a substantial advance in personalized nanomedicine for clinical translation. 相似文献
146.
Palani N. S. Kavitha N. S. Venkatesh K. S. Ashok Kumar K. Thirumal V. Pandurangan A. Sekar C. Ilangovan R. 《Journal of Solid State Electrochemistry》2018,22(10):3273-3287
Journal of Solid State Electrochemistry - Graphene sheet/multiwall carbon nanotube (GMC) and its composites with NiO and Ni(OH)2 are synthesized by microwave-assisted technique for the application... 相似文献
147.
148.
Complex formation between cationically modified gold nanoparticles and DNA: an atomic force microscopic study 总被引:1,自引:0,他引:1
Ganguli M Babu JV Maiti S 《Langmuir : the ACS journal of surfaces and colloids》2004,20(13):5165-5170
Atomic force microscopy has been used for direct visualization of the wrapping of DNA around 30-nm-sized functionalized gold nanoparticles for the first time. The morphology of the complexes seems to be dictated by the relative concentration of the nanoparticles and DNA. A higher concentration of the former leads to the formation of a network of nanoparticles assembled on DNA. This assembly pattern seems to be significantly different from the manner in which cationically modified gold nanoparticles of smaller size (< 5 nm) arrange linearly on DNA, as shown in the literature. A DNA-gold nanoparticle can be developed as a model system for in vitro studies on the mechanism of DNA condensation and also for developing novel methods of nanoparticle self-assembly on the DNA template. 相似文献
149.
The cross-coupling reaction of triarylbismuths with acid chlorides using a catalytic amount of PdCl2/PPh3 afforded the corresponding ketones in high yields. The reactions of aromatic and aliphatic acid chlorides occurred with atom efficiency, as 3 equiv of acid chlorides coupled effectively with 1 equiv of triarylbismuths to yield 3 equiv of the corresponding diaryl and alkyl aryl ketones. 相似文献
150.
Kanak L. Sahu Prasanna K. Prasad Ashok K. Panda Sarweshwar Guru 《Transition Metal Chemistry》1990,15(4):270-272
Summary A series of metal complexes with three new tetradentate Schiff bases derived from benzoin and benzil withc-toluidine and benzil with diaminoethane have been prepared and characterised by physical and chemical methods. The modes of bonding of the ligands with the metal ions have been proposed. Electronic spectra and room temperature magnetic moment values suggest octahedral geometry for the CoII and NiII complexes, whereas the HgII and CdII complexes have tetrahedral geometry. The CuII complexes are square planar. Apart from the complexes of the Schiff bases derived from benzoin, all the other complexes have high molar conductance values suggesting them to be electrolytes. The complexes have been screened against some fungal pathogens. 相似文献