Study on the kinetics of gas-solid based synergistic reduction of limonite carbon-containing pellets

The gas-solid-based synergistic reduction of pellets is an innovative and effective method for iron ore smelting. With the development and utilization of iron resources, ore reserves have been greatly depleted; therefore, as a lean mineral resource, the comprehensive utilization of limonite has become increasingly important. To study the reduction kinetics of pellets in depth, this study used coke and reducing gases (CO and H2) to study the reduction characteristics and changes occurring in carbon-containing limonite pellets. The results showed that the total weight loss percentage of pellets gradually increased with the temperature. The C/O molar ratio had a greater effect on the total weight loss percentage of pellets in a N2atmosphere, but it had no significant effect in CO or H2atmospheres. The maximum reaction rate increased with increasing temperature. The reduction reaction was the most difficult to proceed in the N2atmosphere, and the reaction was most likely to occur in the CO atmosphere. The analysis of pellets by EPMA and XRD found that the pellets reduced in the N2atmosphere had the lowest porosity, and the pellets reduced in the H2atmosphere had the highest porosity, which is more conducive to gas diffusion. Some of the unreduced Si, Al, Mn, Ca, and Fe in the pellets reduced in the N2atmosphere precipitated in the form of oxides, but when a reducing gas (CO, H2) was introduced, precipitation did not occur.

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Low serum insulin-like growth factor-1 level is a predictor of low total weight loss percentage after sleeve gastrectomy

Surgery for Obesity and Related Diseases ◽

10.1016/j.soard.2020.07.033 ◽

2020 ◽

Vol 16 (12) ◽

pp. 1978-1987

Author(s):

Masahiro Ohira ◽

Yasuhiro Watanabe ◽

Takashi Yamaguchi ◽

Atsuhito Saiki ◽

Takashi Oshiro ◽

...

Keyword(s):

Weight Loss ◽

Sleeve Gastrectomy ◽

Growth Factor ◽

Serum Insulin ◽

Total Weight ◽

Total Weight Loss ◽

Insulin Like Growth Factor ◽

Weight Loss Percentage ◽

Low Serum

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IMPORTANCE OF SHODHANA WITH SPECIAL REFERENCE TO SAMANYA SHODHANA OF TAMRA

International Journal of Research in Ayurveda and Pharmacy ◽

10.7897/2277-4343.120111 ◽

2021 ◽

Vol 12 (1) ◽

pp. 43-47

Author(s):

Archana Sahu ◽

Mridu Sanjana Kujur ◽

Lalchand Sahu ◽

Rakesh Singh Thakur ◽

Saroj Parhate

Keyword(s):

Weight Loss ◽

Special Reference ◽

Classical Method ◽

The Body ◽

Total Weight ◽

Total Weight Loss ◽

Liquid Media ◽

Colour Changes ◽

Removal Of Impurities

Rasa Shastra is a branch of Ayurveda, which deals with the uses of drugs originated mainly from metals and minerals substances like Tamra Bhasma. Raw Tamra may contain impurities, heterogeneous and unwanted qualities. Aim of Shodhana is to make it purified and make it free from toxicity and suitable for the body. In this study Shodhana of Tamra was performed by classical method mentioned in Rasa Ratna Samucchya. In this process for Samanya Shodhana of Tamra. It was heated and after red hot it was quenched for 7 times in Tila Taila, Takra, Gomutra, Kanji and Kulattha kwatha in order. Total weight loss of Tamra after Samanya Shodhana was 13.33%, which shows removal of impurities. Literally, Shodhana is a procedure of elimination of Doshas in a drug. After Shodhana Loss on weight of Tamra, pH and colour changes of all liquid media were observed.

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A Modeling Analysis of Non-Melting Solid Fuel Particle Heating

Energy Conversion and Resources: Fuels and Combustion Technology, Energy, Nuclear Engineering, and Solar Engineering ◽

10.1115/imece2003-55197 ◽

2003 ◽

Author(s):

Ali A. Rostami ◽

Susan E. Wrenn ◽

Mohammad R. Hajaligol

Keyword(s):

Heat Transfer ◽

Weight Loss ◽

Solid Particle ◽

Convection Heat Transfer ◽

Total Weight ◽

Fuel Particle ◽

Total Weight Loss ◽

Convection Heat ◽

Particle Heating ◽

Internal Convection

The heating of fuel particles is generally the first step in the process of gasification or combustion of solid fuels such as coal and biomass. The particle heating that is achieved via combined convection and radiation effects requires a rigorous analysis of heat transfer within as well as outside of the particle, which makes the lumped capacity approximation unsuitable. A more adequate representation of the heating-up process requires the inclusion of the internal convection within the solid particle, the blowing effects on the particle surface, the spatial and temporal variations of the solid thermal conductivity as well as the heat of pyrolysis reactions. The internal convection tends to equalize the temperature distribution within the solid, while the blowing effect contributes to the boundary layer thickening and eventually to a reduction in the convection heat transfer to the particle. To include the above-mentioned effects, a kinetic model for the total weight loss of the solid material was coupled with the heating model. A simple first-order reaction model for the total weight loss was utilized in this study. For materials with high moisture contents, the heat of pyrolysis reactions is an important factor in the heating rate and non-uniform heating of the solid particle. Thermal equilibrium between the solid and evolved gases was assumed within the particle and the equations for the conservation of mass and energy were solved numerically. Results show that surface blowing which is due to the devolatilization of the particle tends to reduce the convection heat transfer from the hot gases to the particle. Internal convection contributes to thermal uniformity in the particle. Heat of pyrolysis reactions plays an important role in the heating profile of the particle. It delays the temperature rise of the particle until most of the volatile materials is released.

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Post-Operative Behaviors following Gastric Bypass Surgery and their Influence on Total Weight Loss

Journal of the American Dietetic Association ◽

10.1016/j.jada.2006.05.133 ◽

2006 ◽

Vol 106 (8) ◽

pp. A39

Author(s):

A.L. Greenwald ◽

M. Richards ◽

M.M. Wrobleski ◽

C.C. Roberts ◽

C.R. Koch

Keyword(s):

Weight Loss ◽

Gastric Bypass ◽

Bypass Surgery ◽

Gastric Bypass Surgery ◽

Total Weight ◽

Total Weight Loss

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MON-590 Presence of Diabetes Diminishes the Ultimate Weight Loss After Bariatric Surgery

Journal of the Endocrine Society ◽

10.1210/jendso/bvaa046.813 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

Author(s):

Yingying Luo ◽

Abdel Wahab Jalal Eldin ◽

Raad Haddad ◽

Nahid Keshavarzi ◽

Shokoufeh Khalatbari ◽

...

Keyword(s):

Bariatric Surgery ◽

Weight Loss ◽

Mixed Model ◽

Linear Mixed Model ◽

Excess Weight Loss ◽

Excess Weight ◽

Total Weight ◽

Total Weight Loss ◽

Obesity And Diabetes ◽

Weight Loss Outcomes

Abstract Background Obesity and diabetes as well as their related complications result in both individual and global health burdens. Among patients who present with both obesity and diabetes, bariatric surgery can lead to remission of both these diseases. However, the possible impact of diabetes on the magnitude of weight loss outcomes after bariatric surgery has not been quantified. Methods To address this question, we extracted data from Michigan Bariatric Surgery Cohort (MI-BASiC) to see whether diabetes at baseline could be a predictor of weight loss outcomes. Consecutive patients 18 years of age or older undergoing gastric bypass (GB) or sleeve gastrectomy (SG) for obesity at the University of Michigan between January 2008 and November 2013 were included in our retrospective cohort. All patients had either body mass index (BMI) > 40 kg/m2 or BMI 35 – 39.9 kg/m2 with comorbid condition. Firstly, we performed Generalized Linear Mixed Model (GLMM) analysis to compare the probability of achieving BMI under 30kg/m2 or achieving excess body weight loss (EBWL) 50% or more for patients with or without diabetes. We then further tested the effect of presence of diabetes for the BMI outcomes across time using Linear Mixed Model (LMM) analysis. Finally, we conducted a LMM analysis to determine if diabetes is a predictor of the future weight loss, percentage of total weight loss or percentage of excess weight loss over 5 years of follow up. Results Based on our criteria, 380 patients were included for GB [female 305 (80.3%), mean age 43.6±0.6 years, mean BMI 47.3±0.4kg/m2, diabetes 149 (39.2%), on insulin 45 (11.8%)] and 334 for SG [female 259 (77.5%), mean age 45.3±0.6 years, mean BMI 49.9±0.5kg/m2, diabetes 108 (32.3%), on insulin 29(8.7%)]. From GLMM analysis, the presence of diabetes at baseline did not impact the probability of achieving BMI under 30kg/m2 (p=0.0848), but substantially impacted the probability of achieving 50% or more EBWL (p=0.0021) with individuals without diabetes having a 1.6 (odds ratio 1.56, 95% CL [1.18-2.08]) times higher chance to achieve this threshold. We also showed that individuals with diabetes at baseline had a significant effect to modify BMI points lost, regardless of the surgery type (p=0.0178). The presence of diabetes at baseline diminished weight loss by 1.2 BMI points (95% CL [0.21- 2.20]) which is roughly 10 to 15% of the total BMI points to be lost. LMM analysis further confirmed that after adjusting the time, surgery type, age, gender and baseline weight, there was still a significant difference of absolute weight loss (p=0.0110), percentage of total weight loss (p=0.0089) and percentage of excess weight loss (p=0.0365) between individuals with diabetes versus individuals without diabetes. Conclusion In conclusion, our data demonstrate that diabetes diminishes the ultimate weight loss effect of bariatric surgery. Further research is needed to understand why this is the case.

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Structure, Composition, and Properties of Silk from the African Wild Silkmoth, Anaphe panda (Boisduval) (Lepidoptera: Thaumetopoeidae)

International Journal of Insect Science ◽

10.4137/ijis.s13338 ◽

2014 ◽

Vol 6 ◽

pp. IJIS.S13338 ◽

Cited By ~ 3

Author(s):

Addis T. Kebede ◽

Suresh K. Raina ◽

Jacques M. Kabaru

Keyword(s):

Weight Loss ◽

Cross Sections ◽

Tensile Tests ◽

Total Weight ◽

Complex Structures ◽

Total Weight Loss ◽

Fiber Structure ◽

Breaking Strain ◽

Silk Cocoon ◽

Western Kenya

Silk cocoon nests, as well as the fiber structure, compositions, and properties of the African wild silkmoth, Anaphe panda, collected from Kakamega tropical rainforest (western Kenya) were studied using scanning electron microscopy, high-pressureliquid chromatography, tensile tests, and thermogravmetric analysis, and they were compared with the industrial standard, Bombyx mori. Cocoon nests are complex structures made up of inner, middle, and outer layers. The inner hard parchment was found to protect a mass of (20–200) individual soft flossy cocoons that enclose the pupae. The outer surface of the cocoon nests was covered with a mass of hair-like bristles. Fibers contained crescent-shaped and globular cross-sections with nods at regular intervals. Alanine (34%) and glycine (28%) were the dominant fibroin amino acids observed. Total weight loss after degumming the cocoon nest was 25.6%. Degummed fibers showed higher moisture regain of 9% when compared with cocoon nests (8%). The fibers had 0.4 GPa breaking stress and 15.4% breaking strain. Total weight loss values after thermogravimetric analysis were 86% and 90% for degummed fibers and cocoon shells, respectively.

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Total weight loss after laparoscopic Roux-en-Y gastric bypass is influenced by preoperative weight loss: can we predict the outcome?

Surgery for Obesity and Related Diseases ◽

10.1016/j.soard.2020.05.026 ◽

2020 ◽

Vol 16 (11) ◽

pp. 1850-1856 ◽

Cited By ~ 1

Author(s):

Beata M.M. Reiber ◽

Mark Tenhagen ◽

Rosalie Barendregt ◽

Mauk P. Mekel ◽

Huib A. Cense ◽

...

Keyword(s):

Weight Loss ◽

Gastric Bypass ◽

Total Weight ◽

Total Weight Loss ◽

Preoperative Weight Loss ◽

Preoperative Weight

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Eficiency of the Blanching and Electronic Color Sorting Process for Reducing Aflatoxin in Raw Shelled Peanuts1

Peanut Science ◽

10.3146/i0095-3679-24-1-14 ◽

1997 ◽

Vol 24 (1) ◽

pp. 62-66 ◽

Cited By ~ 3

Author(s):

T. B. Whitaker

Keyword(s):

United States ◽

Weight Loss ◽

The United States ◽

Sampling Plan ◽

Total Weight ◽

Total Weight Loss ◽

Step Process ◽

Aflatoxin Concentration ◽

Before And After ◽

Sorting Process

Abstract Raw shelled peanut lots produced in the United States are inspected for aflatoxin using a sampling plan designed by the Peanut Administrative Committee (PAC). The aflatoxin concentration of most peanut lots rejected by the PAC sampling plan is reduced by using a blanching process that removes the testa or seed coat from the seed and then removing damaged or discolored seeds from the lot using electronic color sorters. Comparing aflatoxin sample results on lots before and after the blanching process indicates that the two-step process is effective for reducing aflatoxin in contaminated lots. The average aflatoxin reduction among the 8911 lots blanched and color sorted over 5 crop yr (1990 to 1994) was 89.9%. The blanching process was equally efficient in reducing aflatoxin for all peanut market types and grades represented in the data base. The average total weight loss among all 8911 lots blanched over the 5 crop yr was 16.8%. Both the percentage aflatoxin reduction and the percentage total weight loss that resulted from blanching was related to the amount of aflatoxin in unblanched lots. As the aflatoxin concentration among unblanched lots decreased, the percentage aflatoxin reduction and the percentage total weight loss associated with the blanching process both decreased.

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