Substituent Effects on Regioselectivity of the Diels-Alder Reactions: Reactions of 10-Allyl-1,8-dichloroanthracene with 2-Chloroacrylonitrile, 1-Cyanovinyl Acetate and Phenyl Vinyl... by Mujeeb A. Sultan, Usama Karama

“…The reactions proceeded under microwave condition in xylene. Configurations of these isomers have been assigned with the help of NMR spectra. …”
Get full text

Ultrasonicated Synthesis of N-Benzyl-2,3-substituted Morpholines, via the Mitsunobu Diol Cyclisation by B. Jayachandra Reddy, M. C. Somasekhara Reddy

“…A facile five step synthesis of N-benzyl-2,3-substituted morpholines (i-iii) was performed. The key steps were microwave assisted Friedel-crafts acylation and diol cyclization carried out via an ultra sonication of Mitsunobu reaction using DEAD (diethylazodicarboxylate), TPP in THF for 1 h. …”
Get full text

Neutrino Mass from Cosmology by Julien Lesgourgues, Sergio Pastor

“…We show how the analysis of current cosmological observations, such as the anisotropies of the cosmic microwave background or the distribution of large-scale structure, provides an upper bound on the sum of neutrino masses of order 1 eV or less, with very good perspectives from future cosmological measurements which are expected to be sensitive to neutrino masses well into the sub-eV range.…”
Get full text

New Strategies in the Treatment of Ta-T1 Transitional Cell Carcinoma (TCC) of the Bladder by Maurizio A. Brausi

“…Standard intravesical chemotherapeutic agents can now be delivered more effectively thanks to new technological advances in drug delivery. Local microwave hyperthermia and electromotive drug administration are of particular interest. …”
Get full text

Measurement of Baseline and Orientation between Distributed Aerospace Platforms by Wen-Qin Wang

“…In this paper, we propose an improved pulsed duplex microwave ranging approach, which allows determining the spatial baseline and orientation between distributed aerospace platforms by the proposed high-precision time-interval estimation method. …”
Get full text

Shopping for Health: A Menu for One by Morgan Denhard, Wendy Dahl

“…Whether you pop a dish into the microwave after a busy day or spend time cooking a special meal for yourself, shopping for and preparing healthy, low-cost meals for one can be easy and enjoyable with just a little bit of planning. …”
Get full text

A New Method for Design of Microstrip Line Interdigital Filter by Feng Zhenghe Yu Xiaoguang

“…The paper proposed a numerical method for calculating the characteristic of microwave filter where transmission properties of coupled multi conductor are used directly Not only coupling between adjacent conductor but also non adjacent ones are considered The nonsymmetric coupling structure can be dealt with also So the accuracy of results becomes higher There are many intrinsic modes with different propagation constant in a multiconductor structure filled by many dielectric materials This is quite different from the multiconductor with homogeneous media filled We must consider not only intrinsic impedance but also different propagation constants The intrinsic values and Vectors of Multiconducter transmission line can be got by matrix telegraphist’s equation The characteristic of filter can be expressed by equivalent network after optimized The paper presented some examples including a filter with non-equal width cavities structure to show the validity of this method…”
Get full text

Synthesis and QSAR Study of Some HDL Cholesterol Increasing Quinazolinone Derivatives by M. B. Deshmukh, Savita Dhongade (Desai)

“…We describe here an easy and efficient method to obtain S-alkylated derivatives of thio-quinazolinone using different alkylating agents via a solvent-free microwave-assisted method. The alkylated thio quinazolinones were further sequentially condensed with hydrazine hydrate and different aromatic aldehydes to get the hydrazones, which were studied for QSAR. …”
Get full text

A 31.5 GHz Patch Antenna Design for Medical Implants by Yasir Ahmed, Yang Hao, Clive Parini

“…Typical antennas designed for the microwave range are quite large in size, which makes them unsuitable for implants. …”
Get full text

Dark Matter and Dark Energy Induced by Condensates by Antonio Capolupo

“…It is shown that the thermal states with the cosmic microwave radiation temperature and the Unruh and the Hawking radiations give negligible contributions to the critical energy density of the universe, while the thermal vacuum of the intercluster medium could contribute to the dark matter, together with the vacuum energy of fields in curved space-time and of mixed neutrinos. …”
Get full text

Testing a Dilaton Gravity Model Using Nucleosynthesis by S. Boran, E. O. Kahya

“…Big bang nucleosynthesis (BBN) offers one of the most strict evidences for the Λ-CDM cosmology at present, as well as the cosmic microwave background (CMB) radiation. In this work, our main aim is to present the outcomes of our calculations related to primordial abundances of light elements, in the context of higher dimensional steady-state universe model in the dilaton gravity. …”
Get full text

Design of a subnonsecond Gauusisan pulse generator based on the RF transistor by YANG Feng1, XUE Quan2, CHAN Chi-hao2

“…A simple and low cost subnonsecond Gaussian pulse generator was developed using RF transistor,chip resistors,and chip capacitors.The generator utilized a differential circuit to convert signal from the FPGA into a pairs of positive and negative pulses,which was then used to control the “on” and “off” states of the RF transistor,thus generating an ultra-short pulse through the charging and discharging of the capacitor.The measured results shows that output waveform have 0.8ns pulse duration and morn than 1.8V from an input wave of 25MHz repetition rate.Good agreement between the measured and calculated results is achieved.This circuits is suitable for microwave integrated circuits（MIC）.…”
Get full text

Review on the Millimeter-Wave Generation Techniques Based on Photon Assisted for the RoF Network System by Jiangnan Xiao, Chuang Zhao, Xingxing Feng, Xu Dong, Jiangli Zuo, Jun Ming, Ye Zhou

“…With the development trend of wireless and broadband in the communication link and even the whole information industry, the demand of high-frequency microwave bandwidth has been increasing. The RoF network system solves the problem of spectrum congestion in low-frequency band by providing an effective technology for the distribution of high-frequency microwave signals over optical fiber links. …”
Get full text

Effects of Yam Powder Produced by Different Drying Ways on the Quality and Antioxidant Activity of Greek Style Yogurt during Refrigeration by Rongkun MA, Zhongyi ZHANG, Shangzhen CHENG

“…To study the effect of yam powder produced by different drying processes (hot air, microwave, and freeze drying) on the quality stability and antioxidant activity of Greek style yogurt during storage, the three types of yam powder were used to replace 2% whole milk powder to make Greek style yogurt, and the changes of various indicators were determined during 21 d of storage at 4 ℃. …”
Get full text

Extraction Techniques for Polycyclic Aromatic Hydrocarbons in Soils by E. V. Lau, S. Gan, H. K. Ng

“…The extraction technologies described here include Soxhlet extraction, ultrasonic and mechanical agitation, accelerated solvent extraction, supercritical and subcritical fluid extraction, microwave-assisted extraction, solid phase extraction and microextraction, thermal desorption and flash pyrolysis, as well as fluidised-bed extraction. …”
Get full text

Pattern Synthesis of Time-Modulated Array Antenna Based on an Improved Invasive Weed Optimization Method by Zhenkai Zhang, Xinxing Liu, Bing Zhang, Hailin Li

Get full text

A survey of optical/electric hybrid switching technology for satellite Internet by Zhenhua ZHANG, Siyue SUN, Gaosai LIU, Long WANG, Xinglong JIANG, Lin DONG, Guang LIANG

“…In the space environment where laser links and microwave links coexist, the development of satellite Internet optical/electric hybrid switching will help promoting the construction of air-space-ground integration.According to the characteristics and transmission requirements of satellite Internet services, the current status of electrical domain switching technology and optical domain switching technology were investigated and analyzed, and the applicability of existing switching technologies in the construction of satellite Internet was summarized.At the same time, according to the analysis results, the end-to-end network on the satellite was constructed, and based on this, the design of the optical/electric hybrid switching architecture on the satellite was completed.It mainly included the interface, electrical domain adaptation module, optical domain adaptation module, optical/electric convergence module, optical switching module, packet switching module and management control module.…”
Get full text

New techniques of intra-satellite communication and ranging/time synchronization for autonomous formation flyer by LI Xue, ZHANG Qi-shan, XU Yong, WANG Ce

“…The hybird FDMA/CDMA mode was developed for AFF communication networking,and precisely ranging ＆ time synchronization was performed by bidirection Asynchronous transfer frame of CCSDS proximity-1 protocol via intra-satallite microwave link in AFF. The principle of two-way noncoherent ranging mode about direct sequence spread spectrum（DSSS） was presented for intersatallite ranging/time synchronization in AFF FDMA/ CDMA networks,concerned equations were constructed and two iteration compupting algorithms were derived. …”
Get full text

DC and AC Characteristics of GaAs/InGaAs/AIGaAS Real Space Transfer Transistors by H. C. Chen

“…For AC performance, S-parameter measurements of high frequency and microwave characteristics indicate a projected maximum frequency of oscillation of fmax⁡=2.7GHz and a current gain cutoff frequency (fT) occurs at 1.8GHz.…”
Get full text

Dynamic Range Consideration in MIMO Systems with Hybrid Antenna Selection by Javad Ahmadi-Shokouh

Get full text