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VOLUME 65 |
NUMBER 6 |
JUNE 2006 |
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CONTENTS |
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Reviews |
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459 |
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Homogeneous distribution of poorly
water-soluble drugs in polyvinylpyrrolidone (PVP), a hydrophilic carrier, is
definitely a suitable way to improve the bioavailability of such drugs.
However, fundamental knowledge of drug polymer interaction and comprehensive
study of the thermal, structural and solubility properties of such binary
systems is the prerequisite for the development of useful drug product. The
paper reviews physical state, dissolution behavior and elucidation of
drug-PVP interaction in solid dispersion using XRD, FTIR, DSC, SEM, hot stage
microscopy and NMR. The importance of suitable selection of the system
preparation methods have also been demonstrated and emphasis is laid on the
potential methods for the industrial production of solid dispersions. IPC Code: A61J3/07 |
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470 |
Fuzzy modeling and control of HVAC systems – A
review |
Paper presents role of fuzzy modeling in heating ventilating and air conditioning (HVAC) and control models. Fuzzy logic offers a promising solution to this conceptual design through fuzzy modeling. Numerous fuzzy logic studies are available in the non- mechanical engineering field and allied areas such as diagnostics, energy consumption analysis, maintenance, operation and its control. Relatively little exists in using fuzzy logic based systems for mechanical engineering and very little for HVAC conceptual design and control. The purpose of this review is to diversify information and to appraise recent advances on the specific areas of conceptual design and control involving synthesis of HVAC components. IPC Code: G06N7/02 |
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477 |
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The review presents the pharmacological activities of some of the flavonolignans including author’s research work in this area. There may be a wide scope of integrating the pharmaceutical industries especially those based on natural products, with the fuel and energy industries dealing with the production of petroleum hydrocarbons, biodiesel, lubricating oils, alcohols, glucose and glucose based value added chemicals and materials, xylose and xylose based value added chemicals and materials, lignin based aromatic and heterocyclic chemicals etc. IPC Code: A61K31/60 |
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485 |
An implementation and usability evaluation of
automatic cash-payment system for hospital Chung-Ho Tsai |
Most hospitals have the information system to
deal with the register, billing and payment process in Taiwan. The payment
mechanism is mainly by cash that is counted by the counter clerks. In order
to lessen the workload of counter clerks and reduce the patient’s waiting
time for speeding up the payment process. This study implemented a hospital automatic
cash-payment (HACP) system. An experimental evaluation was also conducted to survey the perceptions of patient’s feeling about the
system. The results displayed that relative advantage of system, complexity
of system and perceived service quality of system have significantly effected
on behavioral intention of HACP system use. Perceived service quality has
most predictive power to the behavioral intention of system use. Behavioral
intention of HACP system use has in turn positively effected on actual system
use of HACP system.
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495 |
Amarpal Singh, Ajay K Sharma & Paramjit Singh |
This paper simulates two-channel
WDM optical communication system to investigate the effect of FWM on Bit
Error Rate (BER) for different Non-Return to Zero (NRZ) and Return to Zero
(RZ) type of modulation formats at various dispersion values and core
effective area of fiber for optical link having two spans of 100 km each. BER
got improved with NRZ raised cosine modulation format and by increasing the
core effective area of fiber. A fuzzy based approach is proposed to calculate
BER using NRZ raised cosine modulator by varying the dispersion and core effective area of fiber. Fuzzy logic helps in dealing with uncertain and complex
systems difficult to model mathematically. |
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499 |
Mathematical modeling for production system with backlogging and
failure in repair Singa Wang Chiu &
Yuan-Shyi Peter
Chiu |
This paper employs mathematical modeling to derive the optimal lot size for economic production quantity model with random defective rate, imperfect rework process, and backlogging. In real life manufacturing process, the generation of defective items is inevitable. In this study, random defective rate is assumed and all defective items are reworked when regular production ends. During the rework process, a random portion of reworked items fails and becomes scrap. Disposal and repair costs are included in the proposed mathematical modeling and analysis, the optimal production lot size and backordering level that minimize overall production costs are derived. Numerical example is provided to demonstrate its practical usage.
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S & T and Industrial
Research |
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507 |
Development of four channel
programmable FES system using multi-tap transformers V K Sharma, R C Agnihotri, Dinesh Pankaj, Neelesh Kumar, Rohit
Jindal, Deepak Mehta & Raj Bahadur |
Spinal cord injuries are predominantly prevalent among younger individuals (> 55% in 16-30 age group). Functional electrical stimulation (FES) is electrical stimulation of muscle deprived of nerves control, with a view of providing muscular contraction and providing a functionally useful movement. The paper reports on the development of a FES system using multi-tap transformers, and also usefulness of the system on a complete paraplegic patient with injury level T-4 to T-12. |
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510 |
Design and development of high frequency standard inductors Om Kar Nath
&Avadesh Kumar Goel |
A set of high frequency standard inductors (10 mH, 100 mH and 1000 mH) has been designed and developed. Such inductors, which are in the form of RC circuit having thin film resistors and high quality capacitor, show little variation at high frequencies. Also their terminals are provided with 4-TP (Four Terminal Pair) configuration, which is capable of minimizing residual impedances and stray field effects at high frequencies. These inductors serve as good inductance standards, which ensure high accuracy at high frequencies upto about 10 MHz. Such inductors would serve as echelon I level transfer standards at HF and are also quite suitable for calibration of 4-TP LCR meters/ impedance bridges. IPC Code: H02M1/15
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514 |
Saroj Sharma & Garima Mishra |
This
study describes the kinetics and mechanism of free radical polymerization of
vinyl acetate initiated by triphenyl stibonium
1,2,3,4-tetraphenylcyclopentadiene ylide in dioxane at 75 ± 0.1°C under
nitrogen atmosphere. The system followed ideal radical kinetics (Rp
α [M] [I]0.5). The reaction has been retarded by
hydroquinone, aniline and nitrobenzene. The overall activation energy and
average value of kp2/kt are 32 kJ mol-1
and 0.46 l mol-1s-1, respectively. IPC Code: C08F18/08
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518 |
Studies on effect of alkaline earth metal chloride on crossing point
temperature of coal |
Crossing point temperature (CPT) of coal with and without inhibitor (MgCl2, CaCl2 and BaCl2) was determined. CPT of coal without inhibitor was 136°C. Known weight of coal (-72 mesh size) was treated with known volume of 1N, 2N, 3N, 4N & 5N solution of MgCl2, CaCl2 and BaCl2 and CPT with these inhibitors was determined respectively. Experimental evidence shows that CPT is a function of concentration of alkaline earth metal chloride. Among these concentrations of inhibitors of each inhibitor, 5N solutions were chosen due to its effective influence on CPT of coal. The increase in CPT was 10.5°C, 7°C, and 6.6°C with 5N solution of MgCl2, CaCl2 and BaCl2 solution respectively. Emission of CO and CO2 with and without inhibitors was determined as a function of temperature by using 5N aqueous solution of MgCl2, CaCl2 and BaCl2. Experimental evidences indicate that application of MgCl2 as an inhibitor is more efficient due to synergistic effect. |
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Waste Treatment and Utilization |
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521 |
Rajeev Kaushik, Radha Prasanna & H C Joshi |
Anaerobically digested distillery effluent (ADE) of molasses based distilleries with high BOD and COD cause deterioration of land and ground water quality when discharged in the environment. Spirulina platensis (ARM 730) was grown in different dilutions and used for treatment and safe disposal of ADE. It was observed that growth and other parameters like protein, carbohydrate, lipids were significantly higher in 50% ADE over standard Zarrouk’s medium and other ADE dilutions. After growing Spirulina for 14 days in all the different dilutions of ADE, a significant decrease was observed in the following: BOD, 51-94.6; total C, 27.2-71.8; and total N, 35.4-58.0 %. IPC Code: B02C4/06 |
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Book Review |
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526 |
ICTs and Indian Economic Development:
Economy, Work, Regulation Reviewer: N Mrinalini |
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Author-Reader Platform
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528 |
Announcement |
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530 |
Additions and Corrections |
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531 |
Instructions to contributors |
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Author Index