Miracle-dz/UniFAR-FTUs huggingface dataset:
ROAR -- A Ground-Based Experimental Facility for Orbital Aerodynamics Research

DISCOVERER is a European Commission funded project aiming to revolutionise satellite applications in Very Low Earth Orbits (VLEO). The project encompasses many different aspects of the requirements for sustainable operation, including developments on geometric designs, aerodynamic attitude and orbital control, improvement of intake designs for atmosphere breathing electric propulsion, commercial viability, and development of novel materials. This paper is focused solely on the description of the experimental facility designed and constructed to perform ground testing of materials, characterising their behaviour in conditions similar to those found in VLEO. ROAR, Rarefied Orbital Aerodynamics Research facility, is an experiment designed to provide a controlled environment with free molecular flow and atomic oxygen flux comparable to the real orbital environment. ROAR is a novel experiment, with the objective of providing better and deeper understanding of the gas-surface interactions between the material and the atmosphere, rather than other atomic oxygen exposure facilities which are mainly focused on erosion studies. The system is comprised of three major parts, (i) ultrahigh vacuum setup, (ii) hyperthermal oxygen atom generator (HOAG) and (iii) ion-neutral mass spectrometers (INMS). Each individual part will be considered, their performance analysed based on experimental data acquired during the characterisation and commissioning, thus leading to a complete description of ROAR’s capabilities. Among the key parameters to be discussed are operational pressure, atomic oxygen flux, beam shape and energy spread, mass resolution, signal-to-noise ratio and experimental methodology.
Evaluation of therapeutic effect of compound Danshen dropping pill on coronary heart disease using movement ECG

Objective: Complex salvia miltiorrhiza drip pill To test and verify the clinical effects compound Danshen dropping pill (CDDP) on coronary heart disease. Methods: 70 patients with coronary heart disease and stable angina were treated with CDDP. Their blood lipid, blood flow rate, and movement ECG were examined. Results: After 6 weeks, the total efective rate of angina was 91.4%, the improve rate of ECG was 71.4%. There was significant difference in ECE before and aftere movement (P0.01). Conclusion: The effects of the drug on coronary heart disease with stable angina are satisfactory.
Metasediments in the Alahina Sector and Associated Mineralization (North-Eastern Guinea)

The Alahina sector is located in the North-East of Guinea, precisely in the Siguiri volcano-sedimentary basin. It consists mainly of meta-sediments traversed by Paleoproterozoic pyroclastite, granite, monzogranite and granodiorite veins as well as Mesozoic dolerite and gabbros veins. This article presents new data, on the one hand, on the geochemical petrographic features and the origin of the metasediments of this zone, and on the other hand, on the genetic model of the gold mineralization that they contain. Field observations, as well as petrographic and geochemical studies reveal that the meta-sediments consist of sericite and chlorite schists. They belong to the groups of shales and grauwackes. Their protholites are moderately altered (60 N/YbN = 6.31 - 13.24) and a flat heavy rare earth patterns (HREE). This spectrum is almost identical to those of the “Post-Archean average Australian Shale” and Early Proterozoic Greywackes. Two types of polyphase gold mineralization occur in the Alahina sector: disseminated and veined. They consist of particular of grains and nanoparticles pyrite associated with gold, magnetite, hematite, ilmenite. The hydrothermal alteration accompanying this mineralization consists of silica, microcline, chlorite-epidote-sericite-carbonates.
Mechanical properties of a carbide-free bainitic cast steel with dispersed free ferrite

ABSTRACT A high silicon, medium carbon cast steel was designed and heat-treated in order to develop microstructures composed of carbide-free bainite and small amounts of free ferrite, with the aim of obtaining high strength cast steels with improved ductility. Because of microsegregation, it was observed that ferrite present in partially austenitised samples is mostly present at the highly alloyed zones, creating an interconnected network even for low proportions of this phase. Despite the coarse solidification structure and marked microsegregation in the cast steel, the mechanical properties obtained for both fully bainitic and bainitic-ferritic microstructures largely satisfy the minimum standard requirements for high strength cast steels and are similar to those reported for wrought steels of similar microstructures.
Molecular dynamics simulation of Ion Beam Etching as technology process for creating graphene-based membranes

– Carbon nanomaterials present new possibilities for creating permeable membranes. Ionic beam etching technology allows to create pores in graphene substrates and has the potential to be used in various separation processes. In our study we present a molecular dynamics simulation of the energy needed to puncture the graphene surface to create porous surface. Experimental part shows dependency of irradiation time to pore diameter on silica substrate, which indicates it is possible to create pore diameters lesser than the beam diameter. We present a technology process of creating pores of a specific diameter.
Meningeal Hemangiopericytomas: Review of An Institutional Series of 21 Cases

Objective:Meningeal hemangiopericytomas (HPCs) are rare tumors that mimic meningiomas radiologically but constitute a distinct clinicopathologic entity. Our operative series of 21 patients with HPCs attempts to review the clinical characteristics of this rare entity. Materials and Methods:This is a retrospective analysis of the case records of all the patients with HPC operated on since 2000 with a minimum of 2 years of follow-up. The following prognostic factors were analyzed for statistical significance—age, sex, location, extent of resection, histopathologic grade, and use of radiotherapy. Results:The study group included 21 patients with a mean age of 38.12 years (range, 13 to 67 y) and with no preferential sex distribution (M:F=11:10). A raised intracranial headache was the predominant presenting complaint (13/21; 61.9%). A predominant skull-base location (13/21, 61.9%) was observed in our series. Gross total removal could be achieved in only 13 cases (61.9%). Majority (18/21; 85.71%) were well-differentiated HPCs. At the end of a mean follow-up period of 4.63 years (range, 2 to 11 y), majority of the patients had a good outcome (16/21, 76.1%) and were in the Glasgow outcome score 1. The mean recurrence-free survival after the first surgery was 3.36 years. Recurrence-free survival with gross total removal (3. 95 y) was superior to subtotal removal (STR) alone (2.4 y) and STR with radiotherapy (2.67 y). Conclusions:HPCs are rare tumors that mimic aggressive meningiomas clinically but have a different histogenesis. HPCs are extremely vascular tumors and more commonly occur at skull-base locations, making radical removal a surgical challenge. Radical surgery is the treatment of choice, and the role of adjuvant therapy as a supplement to STR is yet to be established. Long-term follow-up is mandatory as HPCs carry a risk of local recurrence and distant metastases even many years after diagnosis.
Experimental Analysis of an Ultra Compact Combustor Powered Turbine Engine

The innovative Ultra Compact Combustor (UCC) is an alternative to traditional turbine engine combustors and has been shown to reduce the combustor volume and offer potential improvements in combustion efficiency. Prior UCC configurations featured a circumferential combustion cavity positioned around the outside diameter (OD) of the engine. This configuration would be difficult to implement in a vehicle with a small, fixed diameter and had difficulty migrating the hot combustion products at the OD radially inward across an axial core flow to present a uniform temperature distribution to the first turbine stage. The present study experimentally tested a new UCC configuration that featured a circumferential cavity that exhausted axially into a dilution zone positioned just upstream of the nozzle guide vanes. The combustor was sized as a replacement burner for the JetCat P90 RXi small-scale turbine engine and fit inside the engine casing. This combustor configuration achieved a 33% length reduction compared to the stock JetCat combustor and achieved comparable engine performance across a limited operating range. Self-sustaining engine operation was achieved with a rotating compressor and turbine making this study the first to achieve operation of a UCC powered turbine engine.
Petrogenesis and metallogenic potential of the Wulanba granite, southern Great Xing’an Range, NE China: constraints from whole-rock and apatite geochemistry

Abstract The Wulanba granite, consisting of biotite monzogranite and syenogranite, is located in the southern part of the Great Xing’an Range, NE China. Whole-rock major- and trace-element geochemistry suggests the Wulanba granite is a high-K–shoshonitic, slightly peraluminous and highly differentiated I-type granite. The Sr–Nd–Hf isotopes indicate that it originated from partial melting of juvenile crust derived from the depleted mantle with a minor input of old crust. The relatively young T2DM and tDM2 ages indicate it was most likely derived from a Late Neoproterozoic to Early Palaeozoic source. We have demonstrated that the biotite monzogranite is the ore-related intrusion of the Haobugao Zn–Fe mineralization based on the following geological, geochronological and geochemical evidence: (1) the chalcopyrite/pyrite in the biotite monzogranite and the continuous mineralization of drill core ZK2508; (2) the consistence of the emplacement age of the biotite monzogranite (~141–140/138 Ma) with the skarn mineralization age (~142 Ma); and (3) the presence of rich ore-forming elements (Fe–Zn–Cu) in the biotite monzogranite, and the similar Pb compositions of the sulfides from the Haobugao deposit and the biotite monzogranite. Compared to the barren syenogranite, the fertile biotite monzogranite is more oxidized, while the edges of the apatite grains in the biotite monzogranite are more oxidized than the centres. The average F/Cl ratio of the fertile biotite monzogranite (~123.45) is much higher than that of the barren syenogranite (~73.98). We conclude that these differences reflect unique geochemical signatures, and the geochemical composition of the apatite can be used to infer the economic potential of granites.
Morphology of Direct SLS-Processed Stainless Steel Layers

This paper discusses work done to analyse the shape of stainless steel layers generated by direct selective laser sintering (SLS). Laser power, scan spacing and scanning speed have been varied, to investigate their effect on geometry. The relationship between scanning parameters and the qualities of sintered parts (dimensional uniformity, porosity and scanned track shape) is described. A PC-based finite element code, developed to simulate SLS, has been modified to match the conditions of experiments discussed above. A comparison is made between computer-generated and experimentally-generated parts.
A Comprehensive School Health Program to Reduce Disparities and Riskfor Type 2 Diabetes in Overweight At-Risk Youth

Background: South Asian Immigrants (SAIs) are the second fastest growing Asian immigrant population in the US, and at a higher risk of type 2 diabetes (diabetes) than the general US population. Coronary Artery Disease (CAD) is the principal cause of mortality globally, particularly in diabetic subjects. In this study, we sought to determine the; 1) distribution of risk factors for CAD in diabetic and non-diabetic SAIs; and 2) presence of sub-clinical CAD in diabetic and non diabetic SAIs in the US. Methods: 213 first generation SAIs subjects were recruited and broadly divided into two subgroups; 35 diabetics and 178 non diabetics. Their risk factors for CAD were compared. For sub-clinical CAD assessment, Common Carotid Artery Intima-Media Thickness (CCA-IMT) was used as a surrogate marker for atherosclerosis. For CAD diagnosis, Exercise Tolerance stress Test (ETT) was performed. Results: Both diabetics and non diabetics SAIs in general, share a very heavy burden of CAD risk factors. Hypertension (p=0.003), high cholesterol (p<0.0001) and family history of diabetes (p<0.0001) was significantly associated with diabetes. Presence of sub-clinical CAD was also higher in diabetics as compared to non diabetics (63% Vs 52%). 45% of diabetics (who were not previously diagnosed with CAD) were found to be ETT positive for CAD (p<0.0001). Conclusion: CAD risk factors and sub-clinical CAD are more prevalent amongst diabetic SAIs. Early screening and aggressive treatment for risk factor reduction in SAIs is the key to combating the increasing incidence of CAD. Larger prospective trials are required to confirm these study findings.
Topical Timolol for pyogenic granuloma in a child: A case report and literature review

Recently, literature has suggested that Timolol gel 0.5% is a safe and effective treatment for pyogenic granuloma (PG) in children. We present the case of a 3 year-old girl with a PG in the left medial canthus, which was treated with Timolol and resolved after 6 months with no evidence of scarring.
Long‐Term Precipitation Estimates Generated by a Downscaling‐Calibration Procedure Over the Tibetan Plateau From 1983 to 2015

The World Meteorological Organization stipulates a minimum of 30 years of historical data is needed to obtain meaningful results in climatological research. However, large numbers of studies have explored downscaling approaches based on the TRMM Multi‐Satellite Precipitation Analysis (TMPA) data, which span only from 1998 to the present, to obtain the precipitation estimates (~1‐km resolution). The main aim of the present study was to develop a new method for obtaining long‐term (>30 years) precipitation estimates at ~1‐km resolution and to apply that method to a region with complex topography, the Tibetan Plateau. First, PERSIANN‐CDR (Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks—Climate Data Record) data were used for downscaling. Considering the characteristics of the PERSIANN‐CDR data, a new downscaling‐calibration procedure utilizing a combination of a spatial data mining downscaling algorithm (Cubist) and a geographical ratio analysis calibration method was proposed. We found that (1) both the original PERSIANN‐CDR data (Bias ~40.79%) and the downscaled results before calibration (Bias ~26.78%) overestimated the precipitation compared with ground observations; (2) the final downscaled results based on the PERSIANN‐CDR data after calibration were close to the ground observations (Bias ~5%); (3) compared to the results interpolated based on the PERSIANN‐CDR data (E <−1.0), both the downscaling procedure and calibration procedure contributed significantly to the accuracy of the final downscaled results (E ~0.83). These findings suggest that the proposed downscaling‐calibration procedure has great potential as an approach for retrieving long‐term precipitation estimates (~1‐km resolution) over the Tibetan Plateau.
The Engineering of Porous Silica and Hollow Silica Nanoparticles to Enhance Drug-loading Capacity

As a promising candidate for expanding the capacity of drug loading in silica nanoplatforms, hollow mesoporous silica nanoparticles (HMSNs) are gaining increasing attention. In this study, porous nanosilica (PNS) and HMSNs were prepared by the sol-gel method and template assisted method, then further used for Rhodamine (RhB) loading. To characterize the as-synthesized nanocarriers, a number of techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen absorption-desorption isotherms, dynamic light scattering (DLS), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) were employed. The size of HMSN nanoparticles in aqueous solution averaged 134.0 ± 0.3 nm, which could be adjusted by minor changes during synthesis, whereas that of PNS nanoparticles was 63.4 ± 0.6 nm. In addition, the encapsulation of RhB into HMSN nanoparticles to form RhB-loaded nanocarriers (RhB/HMSN) was successful, achieving high loading efficiency (51.67% ± 0.11%). This was significantly higher than that of RhB-loaded PNS (RhB/PNS) (12.24% ± 0.24%). Similarly, RhB/HMSN also possessed a higher RhB loading content (10.44% ± 0.02%) compared to RhB/PNS (2.90% ± 0.05%). From those results, it is suggested that prepared HMSN nanocarriers may act as high-capacity carriers in drug delivery applications.
Holocene climate in arid central Asia and timing of sand dunes accumulation in Balikun Basin, Northwest China

Westerlies‐dominated arid central Asia (ACA) has a very fragile ecological environment that highly depends on the available moisture sources. However, the moisture history of this region during the Holocene has been a controversial topic for several decades. Here, we performed optically stimulated luminescence (OSL) dating and grain‐size analysis of aeolian sediments from the eastern Balikun Basin. Our results demonstrated that the early Holocene climate in the Balikun Basin was dry (before ~6.5 ka) and then became wetter during the mid–late Holocene. This Holocene climate pattern correlates well with other climatic inferences from various proxies acquired at various ACA locations, further supporting an earlier view that the Holocene climate in ACA was out of phase with that of the East Asia summer monsoon. Furthermore, an extremely dry event at 4.3–2.6 ka correlated well with pollen records and a decrease of ~4°C in temperature in the western Balikun Lake, but this event was not evident in other ACA regions. Finally, Mingsha Shan Sand Dunes in the eastern Balikun Basin initially accumulated in the earliest Holocene. We suggest that the early Holocene dry climate in the ACA region and the local geomorphology are responsible for the formation of the Mingsha Shan Sand Dunes.
Characterization of a 0.35 THz aluminum 64-pixel MKID array

Microwave Kinetic Inductance Detectors (MKID) are a promising low temperature superconducting detector because of high sensitivity, easy frequency-domain multiplexing and simple structure for large-format arrays. To develop large-format THz detectors for China’s Antarctic THz telescope, we have preliminarily designed an aluminum 64-pixel MKID array operating at the 350 GHz band. In this paper, the characteristics of the MKID array are thoroughly measured.
Mercury (Hg) contamination on water, sediment and macrozoobenthos in Waelata River, Wamsait Village Waelata Sub-district, Buru District, Maluku Province

Gold was found in Buru Island, Maluku Province, Indonesia in November, 2011. Since then, the artisanal small-scale gold mining (ASGM) activity was started in Botak Mount up to now. Mercury was used to extract gold through amalgamation process and produce high volume of wastewater contaminated by Hg to Waelata River, straight to Kayeli Bay. This caused serious problem for the environment. Sampling was done in three locations in Waelata River, Wamsait Village, Waelata Sub-District, Buru District, with the three times of repetition to determine the mercury (Hg) concentration level in the water, sediment and macrozoobenthos. The research result showed that the highest Hg concentration mean in the water, sediment and macrozoobenthos was in ST.02 with the respective values namely 0.0012±0.0001 ppm, 0.0833±0.0062 ppm and 0.0088±0.0003 ppm. On the other hand, the lowest Hg concentration mean was found in ST.01 with the respective values namely < 0.0005±0.0000 ppm, 0.0228±0.0019 ppm and 0.0050±0.0034 ppm. The wastewater was produced by the gold mining activities that did not flow to ST.01, so that Hg in the wastewater did not have any correlation with the Hg in sediment and macrozoobenthos (p<0.05), however it flowed from ST.02 to ST.03 so that the Hg in the water has correlation with Hg in sediment and macrozoobenthos (p>0.05).
Aktivitas Antijamur, Antibakteri Dan Penyembuhan Luka Ekstrak Resin Jernang

Jernang atau dragon’s blood merupakan salah satu produk hasil hutan bukan kayu yang bernilai tinggi berasal dari hutan Indonesia. Jernang adalah resin berwarna merah hasil sekresi buah rotan dan pemanfaatannya masih secara tradisional. Tujuan dari penelitian ini adalah untuk menentukan kemampuan jernang sebagai antibakteri dan antijamur terhadap bakteri ( Basillus subtilis dan Staphylococcus aureus ) dan jamur ( Candida albicans dan Aspergillus flavus ). Kemampuan antibakteri dan antijamur ditentukan berdasarkan uji penyembuhan luka secara in vivo terhadap kelinci. Hasil penelitian menunjukkan bahwa secara umum jernang bersifat antibakteri dan antijamur. Ekstrak etil asetat jernang efektif sebagai antimikroba untuk penyembuh luka.
The current and voltage curves simulation solar module using IV tracer networks

Simulation is done to see that the output parameter value of a solar module. Output produced a solar module as measured manually does not provide information that solar modules working at optimal power. Information on the performance of a solar module can be done with a piece of equipment called IV Tracer. IV Tracer work to collect data by varying the value of the working voltage of solar modules ranging from short circuit to open relations. IV Tracer circuits using MOSFETs IRF540 with snubber circuits produce 52 samples of data for 506 mS. The shape of the characteristic curve of current and voltage (IV) produced in accordance with the datasheet PSIM with the fill factor of 0.71. IV Tracer circuit can generate output parameters according to the theory of power changes to variations in temperature values of 0.05% and variations in light intensity of 0.14%. IV Tracer circuit with MOSFET switching system and may dampen stepping snubber circuit voltage of -0.2 V in accordance with the solar module to be tested.
The Performance of Concrete in a Marine Environment

This paper presents a summary of data from wide range of concretes following periods of marine exposure ranging up to 25 years. Data are presented from more than 100 different concrete mixtures. The various types of concrete include fibre-reinforced concrete (FRC), ultra-high performance concrete (UHPC), concrete with a range of supplementary cementing materials (SCM such as fly ash, slag, and silica fume) and replacement levels (e.g. up to 58% fly ash and 80% slag), lightweight-aggregate concrete (LWAC) and concrete containing alkali-silica reactive aggregate. Testing included measuring chloride concentration profiles, electrochemical corrosion measurements (for steel-reinforced concrete), and various electrical and mechanical properties, in addition to the examination of the microstructure. The data invariably show the importance of the binder type in terms of resistance to chloride ingress and the protection conferred on embedded steel reinforcement, however, the overall performance of SCM concrete was equivocal as high replacement levels were observed to lead to increased surface deterioration (scaling) in some cases. The performance of UHPC was exemplary with little significant chloride penetration and no evidence of surface deterioration after up to 20 years exposure and an estimated 2,000+ freeze-thaw cycles. Expansion (and cracking) due to alkali-silica reaction was observed to be reduced by seawater exposure but, perhaps more significantly, render air-entrained concrete highly susceptible to freeze-thaw damage when the expansion exceeded a certain threshold value. The data are discussed in terms of code requirements and the need for appropriate performance testing. The importance of long-term monitoring of concrete on exposure sites is also discussed.