Partial Filling Research Articles

Enhancing Latent Heat Energy Storage With Heat Pipe–Metal Foam: An Experimental Investigation of the Partial Filling Strategy

ABSTRACTMelting and solidification of a phase change material (PCM) is investigated experimentally by applying a partial filling strategy to the hybrid enhancement of heat pipe–metal foam (HP‐MF) in a vertical cylinder. HP‐MF enhancement can improve the heat transfer capacity of the PCM system as it combines HP's efficient heat transfer capacity with MF's highly effective thermal conductivity capability. The experimental results demonstrate that the partial filling strategy in the melting and solidification of HP‐MF PCM can be optimized for effective MF utilization in the HP‐MF PCM system. A filling ratio of 83% of MF in HP‐MF PCM shows almost identical total melting and solidification along with a temperature distribution to that of an HP‐MF PCM (95% porosity, 20 pore density [PPI]). It is plausible to conclude that the removal of 33% or less mass had no significant effect on the overall melting process of HP‐MF PCM. It should be noted that the HP‐MF PCM system's HP heat transfer efficiency significantly decreased during the melting process when the MF filling ratio was 37.5% and 12.5%.

Study on the Mining Effect and Optimal Design of Longwall Full Mining with Paste Partial Filling

Various methods of longwall full mining with partial filling have been extensively researched to satisfy the specific mining needs of pressurized-coal and residual-coal resources. This study introduces three longwall partial-filling-mining techniques: room–pillar filling mining, parallel-strip filling mining, and vertical-strip filling mining. Numerical simulations are employed to evaluate the efficacy of these methods. The findings indicate that vertical-strip filling mining results in minimal surface deformation and a more uniform distribution of displacements. In practical operations, the effectiveness of filling largely depends on the choice of filling technology and materials. The research further includes an optimization analysis of the filling technology, emphasizing the composition of the coal-gangue-paste filling system and the refinement of its components. Additionally, the study aims to explore the optimization analysis of filling materials, specifically focusing on performance-optimization methods. The experimental results illustrate that optimizing the filling materials can enhance the performance of filling paste, improving both early-stage and long-term compressive strength. Moreover, the paper examines the quantitative characterization of paste-filling-mining subsidence at various stages in conjunction with theoretical knowledge. Subsequently, mining-subsidence-control measures are recommended to address the primary deformation factors across different stages. Through an in-depth examination of filling-method designs, enhancements in filling technology, and predictions regarding filling-mining subsidence, this research offers valuable insights for optimizing longwall partial-filling-mining methods.

Simulation Method for Rubber Compounding under Isothermal Partial Filling Conditions

Rubber mixing is an important link in the production of rubber products. Computational fluid dynamics (CFD) simulation is often used to explore the effect of rubber mixing parameters on rubber mixing effect. Previous CFD-based rubber mixing simulation studies did not consider the impact of using 2D or 3D numerical calculation models on the numerical simulation results. In order to investigate the differences between 2D and 3D numerical computational models in rubber compounding CFD simulation problems, in this paper, we compare and analyze the results obtained from 2D and 3D computational models under different rotational speed conditions to investigate the differences between the models in the numerical simulation of rubber compounding. Three different experimental speeds of the rubber mixer—39, 44, and 49 r/min—were set during the study using 2D and 3D asynchronous rotor models with a speed ratio of 1.15, respectively. The rubber was processed using the Bird–Carreau model. The phase interface between rubber and air was calculated using the volume of fluid (VOF) method. The numerical simulation results of different models show that the rotational speed set to 49 r/min shows the best dispersion distribution effect; the mixing effect and speed change rule obtained by the 2D model are consistent with the results obtained by the 3D model. The performance of the results of the two models is consistent when exploring the numerical simulation of rubber compounding.

Effect of community pharmacist-provided patient education of partial fill availability for acute opioid prescriptions

BackgroundMore than 191 million opioid prescriptions were filled in the United States during 2017, and studies have shown that patients often have leftover medication. ObjectivesTo (1) measure the percentage filled as partial quantities and the percentage subsequently filled to completion; (2) determine which medications are filled as partial, completion, and full fills; and (3) identify patient reasons and demographics for partial, completion, and full fills. Practice descriptionTwo pharmacies of a national community pharmacy chain in Richmond, VA. Practice innovationVirginia law allows prescriptions to be filled in partial quantities as long as the total quantity does not exceed the written quantity and the remaining portions are filled within 30 days of the written date. Pharmacists developed an intervention to educate patients about the option to fill opioid prescriptions as a partial quantity. Evaluation methodsRetrospective analysis of drug utilization reports to identify the impact of the pharmacist intervention for acute, nonmaintenance opioid prescriptions filled as partial, completion, or full fill during a 5-month period. Patient demographics and reasons for choosing a partial or full fill were collected using surveys completed at prescription pickup. ResultsA total of 25.6% of included prescriptions were partially filled, and of these, only 31.9% were filled to completion. Hydrocodone-acetaminophen was the most common prescription, 35.8% full, 28.3% partial, and 36.4% completion fills. Patients’ motivation was driven by the pharmacist’s suggestion (48.5%) for partial fill and desire to have the medication if needed (36.6%) for full fill. ConclusionPharmacist offer of partial filling of acute opioid prescriptions may lead patients to partially fill prescriptions, and patients cited the pharmacist suggestion as a motivator.

Parameters of X-Ray Binary Sco X-1 in the Model of Partial Filling of Roche Lobe by Optical Star

Parameters of X-Ray Binary Sco X-1 in the Model of Partial Filling of Roche Lobe by Optical Star

Inflatable Particle-Jammed Robotic Gripper Based on Integration of Positive Pressure and Partial Filling.

In this work, we proposed an inflatable particle-jamming gripper based on a novel grasping strategy of integrating the positive pressure and partial filling, in which the positive pressure increases the contact area between the gripper and objects, and the grain package in a partial-filled state provides significant grasping adaptation for the gripper. First, we design and fabricate the inflatable particle-jamming gripper and clarify its working mechanism. Then three kinds of grippers, including the proposed inflatable gripper, full-filled gripper, and partial-filled gripper, are experimentally compared for the capability of grasping objects of various sizes, and their performances from four metrics (compliance, reliability, grasping robustness, and lifting efficiency) are evaluated as well. Furthermore, a theoretical analysis is carried out for different grasping performances among the three kinds of grippers, in which the inflatable gripper performs a more promising grasping performance. In this article, by inflating the gripper to an ordered extent with positive pressure, the originally full-filled gripper turns into a partial-filled state. Based on the unique grasping strategy of the proposed gripper, it is possible to achieve a brilliant compliance and robust grasps. Even though the object is located 20 mm away from the gripper-center-axis, valid grasps are observed as well. It is concluded that the proposed gripper could potentially have a wide range of applications in the industry and daily activities.

A New Processing Method for the Nonlinear Signals Produced by Electromagnetic Flowmeters in Conditions of Pipe Partial Filling

A New Processing Method for the Nonlinear Signals Produced by Electromagnetic Flowmeters in Conditions of Pipe Partial Filling

Relaxation of Non-Wetting Liquid Dispersed in Nanoporous Medium with Partial Filling

In the present work the results of experimental studies of relaxation of non-wetting liquid captured by the system of nanopores of Fluka 100 C8+C1 medium are presented. New data on dependence of filling degree on time in the process of outflow at partial initial filling have been obtained. In all the experiments carried out, fluid outflow was carried out in two stages: in the first stage of fast relaxation the characteristic time of outflow is a few seconds, in the second stage of slow relaxation the characteristic time can reach 104 seconds. It was found that “fast” states exist at any initial filling, and the degree of these states increases both with increasing temperature and with increasing initial filling of nanoporous medium with non-wetting liquid.

Influence of Partial Filling of the Gaps with Compressible Liquid on the Contact of Elastic Bodies with Wavy Surfaces

We study the problem of contact of two elastic half planes (plane deformation), one of which has a wavy surface under the conditions of partial filling of the interface gaps with compressible liquid. The formulated contact problem is reduced to a singular integral equation for the derivative of the height of the interface gaps and its analytic solution is obtained. We axnalyze the contact behavior of this system of bodies for two different levels of loading: on the first level the volume of the gap is larger than the volume of liquid, which does not exert pressure on the surfaces of the bodies, whereas on the second level the load exceeds the threshold value after which the liquid fills the entire space and resists crack closure.

Improved Calculation Method of Antenna in a Form of Open End of a Rectangular Waveguide with Partial Dielectric Filling and an Excitation Pin

An improved methodology for calculating an antenna in the form of the open end of a rectangular waveguide with partial dielectric filling (PDF) and an excitation pin is introduced.An improvement in the antenna calculation method is provided by simultaneously taking into account the effective dielectric constant of a partial dielectric filling, changing the dimensions of the excitation pin and its displacement relative to the waveguide axis to reduce the geometric dimensions of the waveguide cross section and antenna matching in a certain frequency band enhancement. With this purpose, the value of the effective dielectric constant can be found through the intrinsic transverse vector functions of the hollow waveguide. In particular, the method provides an improved equation (9) to calculate the normalized conductivity of a coaxial waveguide transition from the side of a rectangular waveguide, which allows matching the excitation pin with the coaxial power line by determining (optimizing) its size and position in the waveguide. The obtained formula is used for normalized shunt conduction introduced by a resistance-loaded pin z1 and z2 , which may be applied in various certain cases when changing the nature of the load resistances z1 and z2 when calculating and designing other antennas and elements of microwave technology. The graphs of the dependences of the voltage standing wave ratio (VSWR) on the frequency for different radius, length of the excitation pin and its displacement relative to the axis of the rectangular waveguide are presented. With the optimal size and position of the excitation pin, the antenna matching in a certain frequency band is improved (the VSWR is reduced to a level not exceeding 1.18 in the 6-8 GHz frequency band).Also, the use of PDF allows to reduce the geometric dimensions of the cross section of the waveguide (up to 61% or more) without changing the electric size (for the 6–8 GHz frequency band the cross-sectional size of a rectangular waveguide for a wave H10 is 23 × 10 mm at a relative dielectric constant of plates thick cx = 6 mm, which equals to εr = 1,9). The charts of normalized antenna patterns in the E and H planes are presented. The reliability and validity of the results obtained is ensured by the convergence of the calculation results under boundary conditions with known results and the convergence of the formulas obtained in units of measurement.

Numerical Crush Analysis of Thin-Walled Aluminium Columns with Square Cross-Section and a Partial Foam Filling

Numerical Crush Analysis of Thin-Walled Aluminium Columns with Square Cross-Section and a Partial Foam Filling

Effect of Postoperative Partial Bladder Filling After Minimally Invasive Hysterectomy on Postanesthesia Care Unit Discharge and Cost: A Single-blinded, Randomized Controlled Trial

(Abstracted from Am J Obstet Gynecol 2019;220:367.e1–367.e7) Hysterectomy—one of the most common surgical procedures performed each year in the United States—has substantial related health care costs, more than US $5 billion. In 2010, it was estimated that upward of 430,000 patients received a hysterectomy, with 40% performed laparoscopically and close to half discharged the same day of surgery.

Cost-Savings Associated with Partial Bladder Filling after Hysterectomy

Cost-Savings Associated with Partial Bladder Filling after Hysterectomy

The Effect of Partial Bladder Filling on Post-Operative Time to Void in Minimally Invasive Gynecologic Procedures [13D

INTRODUCTION: In urogynecologic procedures, backfilling the bladder with 300 cc has been shown to be a better predictor of successful post-operative bladder emptying than completely emptying the bladder at the end of surgery (1). The participants of this study were those undergoing GYN continence procedures, meaning they had some baseline urinary dysfunction. Our study attempts to see the effect on time to void in patients undergoing minimally invasive GYN procedures (laparoscopic or robotic hysterectomy or myomectomy) without baseline urinary dysfunction. The experimental group will have the bladder partially filled at 150cc and the control group will have the bladder completely emptied at the end of the procedure. METHODS: This is a double-blind randomized controlled trial. Sample calculations based on total time required to void after Foley catheter removal assuming an alpha level of 0.05 and beta of 0.8 indicate that 36 patients are needed in each group to determine a difference of 20 minutes in voiding time. Up to 38 patients will be enrolled to take into account a 5% dropout rate. Recruitment started on March 20,2016 with 32 patients recruited thus far. RESULTS: Preliminary comparisons between time to void in PACU and total PACU stay time between partially filled and empty bladder are as follows: 78-minute decrease in time needed to void in the PACU and 74-minute decrease in PACU stay time, respectively. CONCLUSION: This trial has potential to prove our hypothesis that partial bladder back-filling decreases time to void after minimally invasive benign gynecologic procedures, decreasing PACU length of stay and cost.

Thermodynamic and kinetic approaches for evaluation of monoclonal antibody - Lipoprotein interactions

Two complementary instrumental techniques were used, and the data generated was processed with advanced numerical tools to investigate the interactions between anti-human apoB-100 monoclonal antibody (anti-apoB-100 Mab) and apoB-100 containing lipoproteins. Partial Filling Affinity Capillary Electrophoresis (PF-ACE) combined with Adsorption Energy Distribution (AED) calculations provided information on the heterogeneity of the interactions without any a priori model assumptions. The AED calculations evidenced a homogenous binding site distribution for the interactions. Quartz Crystal Microbalance (QCM) studies were used to evaluate thermodynamics and kinetics of the Low-Density Lipoprotein (LDL) and anti-apoB-100 Mab interactions. High affinity and selectivity were observed, and the emerging data sets were analysed with so called Interaction Maps. In thermodynamic studies, the interaction between LDL and anti-apoB-100 Mab was found to be predominantly enthalpy driven. Both techniques were also used to study antibody interactions with Intermediate-Density (IDL) and Very Low-Density (VLDL) Lipoproteins. By screening affinity constants for IDL-VLDL sample in a single injection we were able to distinguish affinity constants for both subpopulations using the numerical Interaction Map tool.

The Effect of Partial Bladder Filling on Post-Operative Time to Void in Minimally Invasive Gynecologic Procedures

The Effect of Partial Bladder Filling on Post-Operative Time to Void in Minimally Invasive Gynecologic Procedures

An Analysis of Image Guided Intact Cervical Cancer (ICC) Hdr Brachytherapy (HDR-BT) and the Relationship between Overall Treatment Time (OTT), Brachytherapy Technique and Partial Bladder Filling Technique on Local Control and Toxicity

An Analysis of Image Guided Intact Cervical Cancer (ICC) Hdr Brachytherapy (HDR-BT) and the Relationship between Overall Treatment Time (OTT), Brachytherapy Technique and Partial Bladder Filling Technique on Local Control and Toxicity

Bill Would Permit Partial Filling of Opioid Prescriptions

Bill Would Permit Partial Filling of Opioid Prescriptions

Batch Partial Emptying and Filling To Improve the Production Rate of Algae

We aim to determine how well predictions on the growth of algae, based on a theoretical model without needing to know the physiological conditions, would work when tested experimentally. These results predict that partial emptying (retaining a fraction of the algae solution) and filling with fresh medium would improve the production rate of for example Desmodesmus sp. (subspicatus), a species of algae used as a source of biofuel. It was found that the method based on this graphical model is suitable for biological systems when the rate of production is an issue. The application of partial emptying and filling improved production by a factor of 1.28 and 1.26 (at product concentrations 1000 mg/L and 600 mg/L, respectively) when retaining 40% of the algae solution. This method may be particularly useful when large amounts of biomass are required and to recommend an appropriate retained fraction for any desired exit concentration.

Enantioseparation of Terbutaline by On-line Concentration Capillary Electrophoresis Coupling with Partial Filling Technique

Enantioseparation of Terbutaline by On-line Concentration Capillary Electrophoresis Coupling with Partial Filling Technique