EFFECTS OF THERMAL ENERGY, MECHANICAL ENERGY, AND SOLVENT ON CIPROFLOXACIN HYDROCHLORIDE MONOHYDRATE PHYSICOCHEMICAL PROPERTIES

The use of thermal energy-based systems to treat uterine fibroids has resulted in a plethora of devices that are less invasive and potentially as effective in reducing symptoms as traditional options such as myomectomy. Most thermal ablation devices involve hyperthermia (heating of tissue), which entails the conversion of an external electromagnetic or ultrasound waves into intracellular mechanical energy, generating heat. What has emerged from two decades of peer-reviewed research is the concept that hyperthermic fibroid ablation, regardless of the thermal energy source, can create large areas of necrosis within fibroids resulting in reductions in fibroid volume, associated symptoms and the need for reintervention. When a greater percentage of a fibroid's volume is ablated, symptomatic relief is more pronounced, quality of life increases, and it is more likely that such improvements will be durable. We review radiofrequency ablation (RFA), one modality of hyperthermic fibroid ablation.

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Investigation of process and product parameters for physicochemical properties of rice and mung bean (Vigna radiata) flour based extruded snacks

10.31219/osf.io/ta8hv ◽

2019 ◽

Author(s):

Chetan Sharma ◽

Baljit Singh ◽

Syed Zameer Hussain ◽

Savita Sharma

Keyword(s):

Physicochemical Properties ◽

Bulk Density ◽

Mung Bean ◽

Water Solubility ◽

Protein Quality ◽

Mechanical Energy ◽

Screw Speed ◽

Bean Flour ◽

Extruded Snacks ◽

Feed Moisture

PR 106 and SML 668 cultivars of rice and mung bean respectively, were studied for their potential to serve as a nutritious snack with improved protein quality and quantity. The effect of extrusion conditions, including feed moisture content (14–18%), screw speed (400–550 rpm) and barrel temperature (130–170°C) on the physicochemical properties (bulk density, water absorption index (WAI), water solubility index (WSI) and hardness) was investigated. The replacement of rice flour at 30% level with mung bean flour for making extruded snacks was evaluated. Pasting temperature increased (84–93 °C) while peak viscosity (2768–408 cP), hold viscosity (2018–369 cP), breakdown (750–39 cP), setback (2697–622 cP) and final viscosity (4715–991 cP) decreased with increasing mung bean flour addition. Increasing feed moisture lowered the specific mechanical energy (SME), WAI and WSI of extrudates whereas increased bulk density and hardness. Higher screw speed had linear positive effect on SME of extruder and negative linear effect on WAI. Positive curvilinear quadratic effect of screw speed was also observed on WSI and density. Higher barrel temperature linearly decreased the SME, density and hardness of extrudates. Developed extrusion cooked rice-mung bean snacks with increased protein content and improved protein quality along with higher dietary fiber and minerals have good potential in effectively delivering the nutrition to the population.

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Thermo-mechanical energy harvesting and storage analysis in 0.6BZT-0.4BCT ceramics

The European Physical Journal Applied Physics ◽

10.1051/epjap/2021200308 ◽

2021 ◽

Author(s):

Satyanarayan Patel ◽

Manish Kumar ◽

Yashwant Kashyap

Keyword(s):

Energy Storage ◽

Energy Harvesting ◽

Thermal Energy ◽

Mechanical Energy ◽

Energy Storage Density ◽

Storage Density ◽

Thermal Energy Harvesting ◽

Polarization Electric Field ◽

And Storage ◽

Olsen Cycle

Present work shows waste energy (thermal/mechanical) harvesting and storage capacity in bulk lead-free ferroelectric 0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3 (0.6BZT-0.4BCT) ceramics. The thermal energy harvesting is obtained by employing the Olsen cycle under different stress biasing, whereas mechanical energy harvesting calculated using the thermo-mechanical cycle at various temperature biasing. To estimate the energy harvesting polarization-electric field loops were measured as a function of stress and temperatures. The maximum thermal energy harvesting is obtained equal to 158 kJ/m3 when the Olsen cycle operated as 25-81 °C (at contact stress of 5 MPa) and 0.25-2 kV/mm. On the other hand, maximum mechanical energy harvesting is calculated as 158 kJ/m3 when the cycle operated as 5-160 MPa (at a constant temperature of 25 °C) and 0.25-2 kV/mm. It is found that the stress and temperature biasing are not beneficial for thermal and mechanical energy harvesting. Further, a hybrid cycle, where both stress and temperature are varied, is also studied to obtain enhanced energy harvesting. The improved energy conversion potential is found as 221 kJ/m3 when the cycle operated as 25-81 °C, 5-160 MPa and 0.25-2 kV/mm. The energy storage density varies from 43 to 66 kJ/m3 (increase in temperature: 25-81 °C) and 43 to 80 kJ/m3 (increase in stress: 5 to 160 MPa). Also, the pre-stress can be easily implemented on the materials, which improve energy storage density almost 100% by domain pining and ferroelastic switching. The results show that stress confinement can be an effective way to enhance energy storage.

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Energy Analysis of Liquid Desiccant Based Evaporative Cooling System

Advanced Energy Systems ◽

10.1115/imece2005-79163 ◽

2005 ◽

Cited By ~ 1

Author(s):

Faleh A. Al-Sulaiman ◽

P. Gandhidasan

Keyword(s):

Thermal Energy ◽

Energy Analysis ◽

Cooling System ◽

Mechanical Energy ◽

Evaporative Cooling ◽

Zeolite Membrane ◽

Solution Temperature ◽

Regeneration System ◽

Liquid Desiccant ◽

Evaporative Cooling System

This paper presents preliminary findings of the energy analysis of a cooling system with multistage evaporative coolers using liquid desiccant dehumidifier between the stages. The proposed evaporative cooling system utilizes the air humidity for cooling in humid areas and requires no additional water supply. The major energy requirement associated with this cooling system is the energy for regenerating the weak liquid desiccant. In this paper two types of energy namely thermal energy as well as mechanical energy are considered for regeneration. For thermal energy, the heat input for regeneration is supplied from the conventional energy sources such as a simple line heater. Reverse osmosis (RO) process is considered for regeneration by mechanical energy and MFI zeolite membrane is proposed for separation of water from the weak desiccant solution. Energy analysis has been carried out for both methods of regeneration. The results show that the energy consumption is about 25% less for the mechanical regeneration system with 3 % recovery than the thermal energy regeneration system to increase the desiccant solution temperature of 22°C. The COP of the proposed cooling system is defined as the cooling effect by the mass rate of water evaporated in the system divided by the amount of energy supplied to the system, that is, the COP is independent of the energy source.

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The crystal habit of ciprofloxacin hydrochloride monohydrate crystal

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2004.11.323 ◽

2005 ◽

Vol 276 (1-2) ◽

pp. 237-242 ◽

Cited By ~ 13

Author(s):

Yong Liu ◽

Jingkang Wang ◽

Qiuxiang Yin

Keyword(s):

Crystal Habit ◽

Ciprofloxacin Hydrochloride ◽

Hydrochloride Monohydrate

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A human body as an energy source

Bulletin of NTU KhPI Series Problems of Electrical Machines and Apparatus Perfection The Theory and Practice ◽

10.20998/2079-3944.2021.2.12 ◽

2021 ◽

pp. 60-65

Author(s):

Yevgen Honcharov ◽

Nataliya Kriukova ◽

Vladislav Markov ◽

Igor Polyakov

Keyword(s):

Thermal Energy ◽

Human Body ◽

Power Plants ◽

Experimental Testing ◽

Mechanical Energy ◽

Living Organism ◽

Electrical Energy ◽

The Body ◽

Charge Carriers ◽

The Brain

The article deals with the actual problems of using the energy released by the human body. The question arises how much energy can the human body generate? Is it possible to use this energy for domestic and industrial needs? In the 18th and 19th centuries, the first scientific works on this topic appeared. It turned out that the charge carriers in the proteins of a living organism are protons and electrons, which, together with the electron-hole conduction system, create a single conductivity inherent only in a living organism. The electrical activity of the brain is assessed by voltage pulses with an amplitude of 500 μV of various frequencies from 0.5 to 55 Hz. It is impossible to receive pulses with such a frequency and such an amplitude from only ionic-type charge carriers. Electrochemical current sources are inertial; therefore, this fact can be direct evidence of the presence of electronic movement of charge carriers in the brain and the nervous system as a whole. It is quite realistic to use the thermal energy of the human body. Currently, the central building of the Stockholm railway station has been turned into a kind of experimental testing ground. Every day about 250 thousand people pass through the station building, who emit up to 25 MW of thermal energy. Most of it in the form of heated air is collected in ventilation and through heat exchangers energy is transferred to heat water in the heating system of another building. According to rough estimates, the efficiency of such a system can save up to 25% of the energy spent on heating the building. Inside a person, electric currents of various frequencies are generated in 7 biological power plants: in the heart, in the brain and in the five sense organs. All the electricity that is generated inside the human body is absorbed by its own tissues. Not a single electron produced inside a living organism leaves the human body, and does not pass into the environment, but is absorbed by the skin. This is the reason for the closure of the human electrical system. The body itself absorbs all the electricity that it previously produced. The energy generated by the human body is divided into mechanical, thermal, and electrical. The thermal energy of the human body can be used most effectively. Mechanical energy can also be used, but with much less efficiency. The electrical energy of the human body at this stage in the development of science and technology is practically impossible to use. Its use is likely to become real in the very distant future

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Physicochemical properties of ettringite/meta-ettringite for thermal energy storage: Review

Solar Energy Materials and Solar Cells ◽

10.1016/j.solmat.2018.12.013 ◽

2019 ◽

Vol 193 ◽

pp. 320-334 ◽

Cited By ~ 12

Author(s):

B. Chen ◽

F. Kuznik ◽

M. Horgnies ◽

K. Johannes ◽

V. Morin ◽

...

Keyword(s):

Energy Storage ◽

Physicochemical Properties ◽

Thermal Energy ◽

Thermal Energy Storage

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Affects of the Cold Water Pipe Depth in Ocean Thermal Energy Converter Plants with respect to Power Generation Efficiency

PAM Review Energy Science & Technology ◽

10.5130/pamr.v2i0.1395 ◽

2015 ◽

Vol 2 ◽

pp. 50-66 ◽

Cited By ~ 1

Author(s):

Helia Danielle Giordani ◽

Matheus Lages ◽

Miguel Medina ◽

Jade Tan-Holmes

Keyword(s):

Power Generation ◽

Surface Water ◽

Thermal Energy ◽

Power Efficiency ◽

Cold Water ◽

Mechanical Energy ◽

Heat Engine ◽

Water Pipe ◽

Generation Efficiency ◽

Ocean Thermal Energy

The Ocean provides an extensive renewable energy source. It is the exploitation of the thermal gradient between the warmed surface water and the deep cold water. A heat engine was developed to use the surface water as a heat source and the deep water as a cold source in order to convert thermal energy into mechanical energy and generate electricity. This process is called Ocean Thermal Energy Conversion (OTEC). This paper presents the three different types of OTEC power plants: closed-cycle, open-cycle and hybrid-cycle, showing real and conceptual examples of each. All three systems are analyzed in terms of gross power, net power, efficiency and size. Furthermore, the depth of the cold water pipe is discussed and related to the net power generation of the OTEC plant. The power generation efficiency of the plant increases as the gross power production increases. This is due to the depth of the cold water pipe and amount of power used by the cold water pipe pump.

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Structural studies and physicochemical properties of l-valine hydrochloride monohydrate

CrystEngComm ◽

10.1039/c3ce41079j ◽

2013 ◽

Vol 15 (36) ◽

pp. 7372 ◽

Cited By ~ 32

Author(s):

Soma Adhikari ◽

Saikat Kumar Seth ◽

Tanusree Kar

Keyword(s):

Physicochemical Properties ◽

Structural Studies ◽

Hydrochloride Monohydrate

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Physicochemical Properties of Quinoa Extrudates

Food Science and Technology International ◽

10.1177/1082013203009002006 ◽

2003 ◽

Vol 9 (2) ◽

pp. 101-114 ◽

Cited By ~ 72

Author(s):

H. Doğan ◽

M. V. Karwe

Keyword(s):

Moisture Content ◽

Physicochemical Properties ◽

Water Solubility ◽

Mechanical Energy ◽

Effect Of Temperature ◽

Screw Speed ◽

Maximum Expansion ◽

Specific Mechanical Energy ◽

Feed Moisture ◽

High Degree

Response surface methodology (RSM) was used to analyse the effect of temperature, screw speed, and feed moisture content on physicochemical properties of quinoa extrudates. A three-level, three-variable, Box-Behnken design of experiments was used. The experiments were run at 16-24% feed moisture content, 130-170°C temperature, and 250-500 rpm screw speed with a fixed feed rate of 300 g/min. Second order polynomials were used to model the extruder response and extrudate properties as a function of process variables. Responses were most affected by changes in feed moisture content and temperature, and to a lesser extent by screw speed. Calculated specific mechanical energy (SME) values ranged between 170-402 kJ/kg which were lower than those observed for other cereals, most likely due to high (7.2%) fat content of quinoa. High levels of feed moisture alone, and in combination with high temperature, resulted in poor expansion. The best product, characterised by maximum expansion, minimum density, high degree of gelatinization and low water solubility index, was obtained at 16% feed moisture content, 130°C die temperature, and 375 rpm screw speed, which corresponds to high SME input. It was demonstrated that the pseudo-cereal quinoa can be used to make novel, healthy, extruded, snack-type food products.

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