Miracle-dz/UniFAR-FTUs huggingface dataset:
Utilization Of Pahae Natural Zeolite In The Production Of Polymer Concrete Using Corn Shell Fiber And Polyurethane Resin As Adhesive

Research has been carried out on polymer concrete with Pahae natural zeolite aggregate and corn husk fibers and polyurethane resin fibers as adhesives using a hot press at 170 ° for 30 minutes, which aims to determine the optimum composition in the manufacture of polymer concrete, namely the ratio of sand: zeolite: shell fiber corn with composition (60:25:0), (60:23:2), (60:21:4), (60:19:6), (60:17:8), (60:15:10) in units of weight with variations in the addition of 15% polyurethane resin, composition (60:20:0), (60:18:2), (60:16:4), (60:14:6), (60:12: 8), (60:10:10) in units of % by weight with variations in the addition of 20% polyurethane resin and compositions (60:15:0), (60:13:2), (60:11:4), (60: 9:6), (60:7:8), (60:5:10) in units of % by weight with variations in the addition of 25% polyurethane resin. The test results showed that the optimum mechanical properties in the compressive strength test were 21,574 MPa, flexural strength was 48,249 MPa, and tensile strength was 660,657 MPa. As well as the results of elemental and morphological analysis showing the pores developed, polyurethane’s dispersion, and the elements loaded in the polymer concrete samples.
Seismic Velocity Response to the Ocean Waves Based on Borehole Array

The ambient noise correlation in recent years has been widely used to study the seismic velocity temporal variation related to volcanoes, geothermal fields, earthquake source regions. However, in some regions and times, seasonal seismic velocity changes which could be attributed to environmental factors, including temperature, atmospheric pressure and groundwater, can also be observed. Eliminating the influence of these environmental factors in the temporal variation monitoring results of subsurface media will be helpful to obtain the clear changes of shallow media due to tectonic activities. We used the ambient noise correlation technique of multi-component and multi-frequent-band to obtain the seismic velocity variation of crustal media in Hailing Island, Guangdong Province, China. The results show that the seismic velocity variation of crustal medium in the study area has a strong correlation with the ocean wave height
Novel Agent, Sacubitril-Valsartan: Prescribing Patterns and Perceived Barriers to Hospital Formulary Inclusion

Citation: M, V, Ng C (2019) Novel Agent, Sacubitril-Val- sartan: Prescribing Patterns and Perceived Barriers to Hospital Formulary Inclusion. J Clin Stud Med Case Rep 6: 062. Abstract Purpose: Heart Failure (HF) affects approximately 5.1 million per- sons in America and is a major cause of morbidity and mortality. One of many federal strategies to improve care is utilization of evi- dence-based drug therapies. Sacubitril-Valsartan is the first in-class dual-acting angiotensin receptor neprilysin inhibitor approved by the Food and Drug Administration to reduce the risk of mortality and re-hospitalization of HF with Reduced Ejection Fraction (HFrEF) pa- tients. Despite the positive results of the PARADIGM-HF trial, many institutions have refrained adding sacubitril-valsartan to formulary. This review investigates the barriers associated with adding the aforementioned pharmacological agent to drug formulary. Methods: Investigators performed a search of tertiary resources, one of which was the 2016 ACC/AHA/HFSA Focused Update on New Pharmacological Therapy for Heart Failure: An Update of the 2013 ACCF/AHA Guideline for the Management of Heart Failure. This was followed by a literature investigation utilizing PubMed and EMBASE for articles pertaining to sacubitril-valsartan using the in- clusion terms “Entresto”, “sacubitril/valsartan”, “heart failure”, “paradigm HF”, “formulary decision” and “cost effectiveness”. Given that sacubitril-valsartan was approved in 2015, the articles were limited to the time frame of 2015-2017. The literature was ultimately selected based upon the barriers that were outlined as to why this agent has not become formulary for many institutions. Discussion: After an initial search of sacubitril-valsartan, a total of 120 articles and studies were yielded. Following application of the inclusion and exclusion criteria, 15 were ultimately included. These articles were thoroughly dissected for information regarding formulary barriers. Ultimately, it was discovered that the most prominent barrier to approval for many institutions is the price discrepancy between standard heart failure
Cooling Potential Evaluation of a Ground Heat Exchanger in a Tropical Climate: A Case Study of an Office Building

The main implications of the hot-humid climate characteristics stipulate the need for cooling indoor environments. Ground thermal characteristics can be exploited in the search for sustainable ways to cool the indoor environment. Thus, this work aims to assess the cooling potential of the ground thermal characteristics through a vertical ground heat exchanger (VGHE) in a tropical climate such as Panama City via dynamic simulation. This potential is evaluated in a two-stories office building complying with Panama’s building regulation requirements, where a VGHE system is designed to cover the cooling needs. Since underground temperature data are unavailable, parametric and sensitivity analyses are carried out. For sizing the VGHE, a vertical ground system is chosen since this allows a better configuration in the installation for a building with large cooling demands and eliminates the need for large amounts of land. A difference of 33.52% (4481.4 kWh) in the electricity consumption for cooling was obtained compared to a conventional air conditioning system, which translates into a 770.80$ saving (0.172$/kWh). These results confirm that the system studied for air conditioning is feasible since it could provide positive results in thermal comfort and energy savings for the user.
Coaxial Wire Laser-based Additive Manufacturing of AA7075 with TiC Nanoparticles

AA7075 is a heat treatable aluminium alloy widely used in aerospace and automotive applications due to its outstanding high strength-to-weight ratio. However, the implementation of this alloy in Additive Manufacturing (AM) processes has been limited due to its susceptibility to hot cracking. Moreover, selective evaporation of low boiling point elements Zn and Mg can cause gas porosity and diminish the mechanical properties of AM parts. Recent research revealed the effectiveness of nanoparticles additives to change the solidification behaviour of high-strength aluminium alloys and improve their weldability/printability. In this study, AA7075 enhanced with TiC nanoparticles was utilized as wire feedstock to create single and multi-layer samples with coaxial laser-directed energy deposition (L-DED). The response of the samples to precipitation hardening was studied, evaluating the microstructure and the microhardness before and after T6 heat treatment. Specimens were characterized using optical and electron microscopy and electron backscatter diffraction (EBSD). Crack-free and virtually porosity-free samples were fabricated, which exhibit a refined equiaxed grain structure with grain size <10μm. This confirms the ability of TiC nanoparticles to prevent columnar dendritic growth and promote heterogeneous nucleation. Microhardness values increased by 51 HV after T6 heat treatment and were uniform across the sample. Energy Dispersive Spectroscopy (EDS) analysis showed that there are evaporation losses of Zn and Mg. Considering the boiling temperatures of these elements, it is inferred that the molten pool reaches temperatures above 1090°C, and the partially melted zone temperature is between 907°C and 1090°C.
Growth and quality of Geronggang (Cratoxylum arborescens) seedling in different types of growing mediums and containers

Geronggang (Cratoxylum arborescens) is one of native tree species of tropical peat swamp forest which has a good potency both planted for rehabilitation and industrial purposes. Nevertheless, before this tree species can be cultivated on a large scale, much silviculture knowledge and technology must be accessible, including the technique of seedling propagation. This study evaluated the growth and quality of geronggang seedlings grown in different mediums and containers. The seedling was grown in topsoil (M1) and peat (M2) medium with three containers (C1 = plastic pot (volume (v) = 120 mL); C2 = plastic pot (v = 300 mL) and C3 = polybag (v = 400 mL)). As the control, the seedling was also grown in topsoil + compost medium combined with polybag (M3C3). Growth (height (H), collar diameter (D), and biomass) and morphological ((shoot/root (S/R), D/H) and Dickson quality index (DQI)) attributes of the seedling and medium properties were observed. Peat medium had better results than topsoil (p < 0.05). Furthermore, the seedlings grown in peat medium had the highest performance. M2W3 was the treatment with adequate quality to be outplanted at nine months, with H, D, S/R, H/D, and DQI were 25.4 cm, 3.6 mm, 6.94, 1.37, and 0.36, respectively. The results indicated that using peat alone as a medium in geronggang seedling propagation was relatively time-consuming.
Development of formalin detection system on wet noodles and tengkawang seed fat (shorea sp.) as a natural preservative solution

The emergence of public anxiety about the durability of foods containing preservatives or synthetic substances that are harmful to the human body is already very worrying. Some traders who understand the dangers of synthetic preservatives in food, prefer to use natural food preservatives. However, few traders also use formalin as a preservative in their food products, where formalin is commonly used to preserve corpses and kill germs. For this reason, a formalin content detection system has been developed as a synthetic preservative and tengkawang seed fat (Shorea.sp) as a natural preservative using filter paper as a test medium. The detection results that have been carried out obtained a tool accuracy of 96.25%. Spectrophotometric tests are performed to validate the designed tool. From the results of characterization using a spectrophotometer, the average ppm price is half times different from the ppm calculation results mathematically. This is because at the time of filtration, there are remnants of formalin content that are not carried into the filtrate. In addition, it was also obtained from the results of observations where wet noodles containing tengkawang seed fat (Shorea.sp) can last for 3 days at room temperature (25 ̊C).
Farmer’s knowledge of greenhouse gases impact mitigation: Comparing Bogor and Sumbawa

Farming specifically contributes 10 – 12% of global anthropogenic Greenhouse Gases emissions, including the agricultural sector in Bogor and Sumbawa Regencies. This study aims to compares knowledge and perceptions of greenhouse gases in agriculture among farmers in Bogor and Sumbawa. This study used quantitative and qualitative approaches. Qualitative data was gathered by interviewing 150 farmers from Bogor and Sumbawa. Secondary data analysis is also used to complement the primary data collection. The data was obtained from the Bogor and Sumbawa agriculture services. Based on the results of the study, farmers in Bogor know more about climate change than Sumbawa regencies. Information spread among farmers tends to refer to practices and technology in farming, and the information related to disaster warnings and climate factors is not widely available. In this regard, it is necessary to increase the literacy and understanding of farmers regarding climate change. Literacy must be done so farmers can mitigate and adapt to climate change.
Influence of shielding gas on filler wire mixing at laser hybrid welding of thick high strength steels

The laser hybrid welding process offers many advantages during welding of thick-walled steels, such as the increased penetration depth and, thus, reduced number of layers, reduced heat input and decreased distortion compared to arc-based welding processes. Especially, when welding high-strength steels (HSS), the reduced heat input plays an essential role. However, a major challenge when laser hybrid welding of thick-walled steels is the limited filler wire mixing over the entire seam thickness, which can lead to changed mechanical properties over the depth. To overcome this issue, the add of oxygen into the shielding gas and its influence on the filler wire mixing and finally to the mechanical properties were investigated within this work. Therefore, 20 mm thick S690QL steels were laser hybrid welded in a single-pass. A contactless electromagnetic backing was used to avoid sagging. The admixture of oxygen was performed by a gas mixer, where the oxygen content was varied between 0 % and 7.2 %. The experiments were also accompanied by laser beam welding tests in steel/glass configuration, where the melt pool geometry as well as the melt flow characteristics were captured by a high-speed camera. It can be concluded, that adding of approx. 4 % oxygen into the shielding gas had a positive effect on the filler wire mixing, were up to a depth of 18 mm elements of the filler wire could be observed.
Influence of Coulomb interactions on Einstein phonons in a three-dimensional electron gas and superconductivity

This study investigates the influence of Coulomb interactions on Einstein phonons in a three-dimensional electron gas (3DEG) and their impact on superconducting properties. By considering Coulomb effects in all contributions to the phonon self-energies, we explore the renormalization of phonons and its implications for superconductivity. Numerical solutions of the isotropic Eliashberg equations are used to determine the gap functions, providing valuable insights into the behavior of renormalized phonons. Our analysis reveals that while the frequencies of renormalized phonons are lower compared to non-interacting Einstein phonons, their inclusion leads to higher superconducting critical temperatures and maximum gap functions. However, as the strength of Coulomb interactions increases, a decrease in the superconducting critical temperature and gap is observed. These findings highlight the significant role of Coulomb interactions in determining the behavior of phonons and the emergence of superconductivity in three-dimensional electron gases.
Assessment of the derating methods for centrifugal pump performance handling non-Newtonian fluids

Oil and Gas applications commonly require the displacement of a huge amount of processing fluids. In most cases, these fluids consist of solid rock particles transported by water, e.g. kaolin or bentonite powder, which show non-Newtonian behavior. For this kind of fluid positive displacement pumps are usually recommended, but where high flow rates have to be guaranteed, centrifugal pumps are installed. Since most of the manufacturers provided the performance curves only with water, choosing the appropriate centrifugal pump to handle mineral slurries may be very challenging. Since the viscosity of this kind of fluids varies with the imposed stress and rheology, pumping this type of fluids can lead to a considerable variation in the pump head, and thus, overall efficiency is difficult to-be-predicted. Several reliable methods to predict the centrifugal pump performance in handling high-viscous Newtonian fluids can be found in literature, e.g. the well-known Hydraulic Institute method. Nevertheless, no general practical correlations are provided for non-Newtonian fluids. Previous experimental investigations on centrifugal pumps reported high-performance instabilities at low flow rates when non-Newtonian fluids are considered. Further investigations are needed to define which parameters in the pump fluid interaction have to be considered in the derating process. In this work, an assessment of the prediction quality of the existing derating methods from the literature is carried out. For this purpose, the data obtained from previous experimental investigations on a small commercial centrifugal pump handling mixtures of water and kaolin are considered.
Chlorine and fluorine contents of granitoids as indicatiors for base metal and tin mineralizations

Recent efforts to use the chlorine content in rocks and minerals as a tool for exploration of base metal deposits, on the basis of chloride-complex model for magmatic hydrothermal ore deposits, seem to have resulted in discouraging conclusion on biotite and bulk samples. Yet we obtained extremely high chlorine values on unaltered granitoids from the lead-zinc mine area at Taishu, and some anomalies in other copper mine areas. In these examples, the chlorine anomalies are found to be largely due to fluid inclusions of high salinity. It appears that the chlorine content in bulk rock analysis can be useful in base metal exploration, if rock types (e.g., magnetitebearing series or magnetite-free series) and degree and kind of alteration are examined carefully in advance. From the chlorine data together with some geological evidence, a possible area for future exploration of base metal deposits, perhaps of porphyry type, is proposed in the eastern part of the Chugoku batholith. Tin and greisen-type wolframite deposits occur in granitoids belts that have high F/Cl ratios. Fluorine contents of unaltered granitoids spatially related to the ore deposits have some connection with intensity of these mineralizations. It is recommended, however, to use both fluorine and tin in exploration of these types of ore deposits.
Remote exercise testing in pulmonary hypertension (PHRET)

Abstract Remote exercise tests for patients with pulmonary hypertension (PH) would improve the telemedicine strategies in this disease. The PHRET study assessed the validity and feasibility of four remote exercise tests performed by PH patients at home. Participants undergoing diagnostic assessment for PH were included. At baseline, patients completed a 6MWT followed by a range of study tests including a Timed Up and Go (TUG) test, a Sit‐to‐Stand (STS), a Step Test (ST), and a tele‐6MWT (T6MWT) performed outside using a GPS‐enabled smartphone. Patients performed these tests at home following discharge and at first follow‐up. Analysis focused on comparing the results of study tests to the standard 6MWT. The discontinuation rate was 15%. Ninety‐seven percent of patients were able to complete a TUG, 92% a STS, 73% a ST, and 49% a T6MWT. At baseline, correlation between the standard 6MWT and study tests, respectively, was T6MWT 0.93, ST 0.78, STS 0.71, and TUG −0.76 (p < 0.001). Direction of change in the study test agreed with the standard 6MWT in 68% of the follow‐up ST, 68% of the STS, 71% of the TUG, and 79% of the T6MWT. Patients were able to complete the tests at home, there were no adverse incidents and ≥92% of patients were happy to continue performing home tests. Remote exercise testing is feasible. The T6MWT was a valid remote measure of exercise capacity, but could only be performed by a limited number of patients. The high discontinuation rate may impact the utility of remote tests.
Volume Status Assessment by Lung Ultrasound in End-Stage Kidney Disease: A Systematic Review

Purpose of review: Lung ultrasound is a noninvasive bedside technique that can accurately assess pulmonary congestion by evaluating extravascular lung water. This technique is expanding and is easily available. Our primary outcome was to compare the efficacy of volume status assessment by lung ultrasound with clinical evaluation, echocardiography, bioimpedance, or biomarkers. The secondary outcomes were all-cause mortality and cardiovascular events. Sources of information: We conducted a MEDLINE literature search for observational and randomized studies with lung ultrasound in patients on maintenance dialysis. Methods: From a total of 2363 articles, we included 28 studies (25 observational and 3 randomized). The correlation coefficients were pooled for each variable of interest using the generic inverse variance method with a random effects model. Among the clinical parameters, New York Heart Association Functional Classification of Heart Failure status and lung auscultation showed the highest correlation with the number of B-lines on ultrasound, with a pooled r correlation coefficient of . 57 and . 36, respectively. Among echocardiographic parameters, left ventricular ejection fraction and inferior vena cava index had the strongest correlation with the number of B-lines, with a pooled r coefficient of . 35 and . 31, respectively. Three randomized studies compared a lung ultrasound-guided approach with standard of care on hard clinical endpoints. Although patients in the lung ultrasound group achieved better decongestion and blood pressure control, there was no difference between the 2 management strategies with respect to death from any cause or major adverse cardiovascular events. Key findings: Lung ultrasound may be considered for the identification of patients with subclinical volume overload. Trials did not show differences in clinically important outcomes. The number of studies was small and many were of suboptimal quality. Limitations: The included studies were heterogeneous and of relatively limited quality.
Morphometric Risk Factors for Drusenoid Pigment Epithelium Detachment Collapse and Retinal Pigment Epithelium Atrophy Expansion

Purpose The purpose of this study was to investigate factors associated with drusenoid pigment epithelium detachment (dPED) growth rate, incidence of dPED collapse, and retinal pigment epithelium (RPE) atrophy enlargement rate following dPED collapse and their impact on visual acuity (VA). Methods This was a retrospective longitudinal study on 44 eyes. Serial spectral-domain optical coherence tomography (SD-OCT) and fundus autofluorescence (AF) imaging were performed. Qualitative features and quantitative dPED-related metrics were assessed. The surface-to-volume ratio (S/V) was computed to evaluate dPED shape irregularity. AF imaging was utilized to measure RPE atrophy area in eyes experiencing dPED collapse. Regression models were used to analyze associations among VA, dPED growth rate, and RPE atrophy enlargement rate. Cox regression was used to identify risk factors for dPED collapse. Results Significant correlations were observed between dPED area, surface, and volume (P < 0.05 for all pairs). The dPED metrics were inversely correlated with the S/V. Incidence of dPED collapse was 22 per 100 eye-years over a mean follow-up of 59 ± 41 months. Eyes experiencing collapsed dPED had worse baseline VA (P < 0.001). RPE hypertransmission (hazard ratio [HR] = 3.68, P = 0.004) and hyper-reflective foci (HR = 3.45, P = 0.02) were risk factors for dPED collapse; a higher S/V ratio was protective (HR = 0.78, P = 0.03). A faster rate of RPE atrophy enlargement was associated with a faster rate of dPED volume increase (r = 0.47, P = 0.02) and worse VA over time (P = 0.02). Conclusions Risk stratification in patients with dPED can be aided by identifying risk factors for dPED collapse. Identifying factors associated with RPE atrophy enlargement may have implications for treatment decision making.