Miracle-dz/UniFAR-FTUs huggingface dataset:
Studies of elastic wave attenuation in porous media

Elastic wave attenuation in porous media is due in part to the relative motion of the liquid and the solid. Biot’s theory expresses this component in terms of permeability, fluid viscosity, frequency, and the elastic constants of the material. Experiments were performed to measure attenuation in the frequency range f <20,000 cps by a resonant bar method; attempts to measure attenuation at very high frequencies gave more equivocal results. Alundum bars were used to test the validity of the theory, for with these the loss not due to fluid motion is relatively small. Experiments were also made with natural specimens of rock. These showed that when not subjected to compacting pressure both the velocities and decrements of specimens were affected chemically and physically by the presence of liquid pore saturants. It is concluded that Biot’s theory seems generally applicable to the determination of the fluid‐solid or “sloshing” losses in resonated porous media. There is still some doubt about the applicability .
The intermediate-wavelength magnetic anomaly maps of the North Atlantic Ocean derived from satellite and shipborne data

SUMMARY Two intermediate-wavelength magnetic anomaly maps of the North Atlantic Ocean are derived based on satellite and marine magnetic observations. The satellite map is produced from the covariant features of POGO and Magsat dawn and Magsat dusk magnetic anomalies. The marine map is compiled using shipborne data collected since 1965. The two maps are in excellent agreement over well-defined anomalies both in location and amplitude, suggesting that these anomalies are real and reflect magnetization contrasts in the oceanic lithosphere. Both maps show the intermediate-wavelength seafloor-spreading anomalies of the Cretaceous quiet zone of the central North Atlantic Ocean as well as the negative seafloor-spreading anomaly of the Labrador Sea caused by dominantly reversed polarity periods. The Iceland hotspot, Alpha Ridge, Azores High, King's Trough and the Rockall microcontinent have positive anomalies. There is no consistent magnetic signature associated with the ocean-continent boundary, although the deep sedimentary basin of Nova Scotia is delineated by a well-defined negative anomaly.
Zircon U-Pb geochronology of the Mesozoic intrusive rocks in the Tongling region:Implications for copper-gold mineralization

Tongling region is one of the most important non-ferrous metal producers where the formation of Cu-Au deposits and other poly-metal deposits has close genetic relations with Mesozoic intrusions.In this study,LA-ICP-MS zircon chronology of three-type Mesozoic intrusives (i.e.,quartz diorite—monzonite and granodiorite assemblies related with Cu-Au-S-Fe ore-forming) was systematically investigated in Tongling region.The results of high precise zircon U-Pb ages possibly present the sequences of the intrusive evolutions in Tongling region as follows:granodiorite (141Ma) → pyroxene diorite-pyroxene monzodiorite (139Ma) →quartz diorite—quartz monzodiorite (135Ma,136Ma,137Ma). These high-precision zircon U-Pb ages manifest that the intrusive rocks possibly experienced immediately after crystallization.Laser ablation ICP-MS zircon U-Pb dating yielded two groups of ages (c.a.130 ～132 Ma and 138 ～140 Ma) for the intrusive rocks,which are the most important magmatic events in Tongling area related to Cu-Au mineralization.Combined the high-precision zircon U-Pb dates,Re-Os age of some ore deposit and zircon trace element measurements,two events of ore-forming periods are obtained:one is the ore-forming event with high Ce abnormality (molybdenite Re-Os age of 138 ～ 140Ma),which is closely related to those of copper and gold ore deposits;another is probably ore-forming event with low Ce abnormality (pyrite Re-Os age of about 126 Ma) closely related to those of iron and sulfur ore deposits in the Tongling region.
Nonlinear Controller Synthesis for HIV Dynamics Based on SOS

Nowadays antiretroviral therapy is widely used to cut down the viral burden and cut off a few infection sources in clinical medicine for Human Immunodeficiency Virus (HIV) infected patients, and a lot of evidence have shown that a massive coverage with antiretroviral therapy has already acquired a series of contributions and successes to save life and popularize preventive knowledge. Based on the HIV dynamic model, this paper designs a feedback controller to adjust the concentration values of CD4+T cell, CD8+T cell and viral load in HIV dynamic model to a healthy condition asymptotically. The HIV dynamic model is expressed in the form of a polynomial system and then the control law, as the appropriate drug dosage usually applied in the medical therapy, is designed to suppress the reproduction of the HIV virus and improve the production rate of healthy cell in vivo, simultaneously. According to the polynomial Lyapunov theory and sum of squares (SOS) technique, the conditions for the controller synthesis are proposed. The simulation experimental results can be testified the availability of the proposed method.
The Status of Edible Mushrooms Resource Development and Nutrition Evaluation in Sichuan Province, China

With the development of our agriculture, the utilization of edible mushrooms is more and more widely recognized. The resources of them are abundant in our country, especially in Sichuan. They contain not only rich nutrients, but also active substances such as polysaccharides, which with the biological activity of anti-tumor, anti-diabetic, antifungal and anti-viral. Though edible mushrooms have become the polar industry of Sichuan, still many problems concerning the food safety of edible mushrooms need to be solved. This paper conducts a clear exposition of rich edible mushrooms resources and problems existing in processing and utilization of edible mushrooms in Sichuan.
Zircon Geochronology and Tectonic Evolution of Eclogites from the Beishan and Qinling Orogens, China

Central Asia is host to some of the best examples of ultra-high pressure metamorphic rocks in the world. The study sites located in Beishan and Qinling Orogens contain examples of these high pressure rocks, called eclogites. They are an evidence of ancient continental collisions and their age and composition provide invaluable information about tectonic mechanics during collisions. This study focuses on geochronology of eclogites sampled from Beishan and Qinling Orogens. The Beishan eclogite, occurs as small mafic pods within highly deformed gneisses. The geological context and geochemistry of these eclogites determined in this study suggests they were originally rift-related MORB-type basalts rather than discrete fragments of oceanic crust, as previously thought. Zircon dates obtained from the Beishan eclogite reveal peak metamorphism at 466 ± 27 Ma, which is concordant with the literature. However, U/Th ratios in zircon cores (ca. 880 Ma) are too low to have crystallized from mafic magma and therefore represent xenocrystic cores or previous metamorphic event rather than age of the protolith. The maximum age of the eclogite protolith is constrained by the crystallization age of the country rock orthogneiss at 920 ± 14 Ma. The end of retrogression metamorphism in the studied terrane was constrained by granitic vein that intruded the eclogite at 424 ± 8.6 Ma. This study provides the age for this rock for the first time. From evidence gathered for Beishan Orogen, this study proposes new tectonic model for initial stage of orogen development. The Qinling eclogites did not yield significant amount of zircons, so they could not be dated with certainty. One zircon was dated at 490 ± 83 Ma which is consistent with metamorphic age established in literature, but statistically they cannot be used as a reliable age. However, its remarkably well-preserved eclogite facies mineral assemblage, that is contrary to Beishan eclogite, suggest diversity of dynamics during high pressure terrane exhumation. Lastly, this study has found possible connection between extrusive tectonics of IndiaEurasia collision and its long distance (~600 km) effects on Beishan terrane. Here named, “Cenozoic Thermal Event”, led to reset of metamict zircons in the eclogite, where new ages correspond to major tectonic developments in Tibetan Plateau. This finding provides a new, previously undocumented relationship between tectonism and reset of the zircon geochronometers, which may have significant implications for future geochronology of crustalscale fault systems.
The Use of Virtual Reality in Surgical Training: Implications for Education, Patient Safety, and Global Health Equity

As medicine becomes more complex, there is pressure for new and more innovative educational methods. Given the economic burden associated with in-person simulation, healthcare, including the realm of surgical education, has begun employing virtual reality (VR). Potential benefits of the addition of VR to surgical learning include increased pre-operative resident exposure to surgical techniques and procedures and better patient safety outcomes. However, these new technological advances, such as VR, may not replicate organic tissues or accurately simulate medical care and surgical scenarios, creating unrealistic pseudo-environments. Similarly, while advancements have been made, there are ongoing disparities concerning the utilization of these technologies. These disparities include aspects such as the availability of stable internet connections and the cost of implementing these technologies. In accordance with other innovative technologies, VR possesses upfront economic costs that may preclude equitable use in different academic centers around the world. As such, VR may further widen educational quality between high- and low-resource nations. This analysis integrates recent innovations in VR technology with existing discourse on global health and surgical equality. In doing so, it offers preliminary guidance to ensure that the implementation of VR occurs in an equitable, safe, and sustainable fashion.
Analysis of the Obedience of Personal Protective Equipment Usage to Prevent Occupational Disease among Cosmetic Workers

Cosmetic industry has a high risk of occupational diseases such as talcosis or respiratory disorders among the workers at PT X. Based on the preliminary study, respiratory disorders are indicated among the workers because of high level of dust powder from talc powder at the work place. Occupational diseases can be prevented such as by using correct and precise Personal Protective Equipment (PPE). Methods: The study aimed to determine the relationship between respiratory symptoms, knowledge, education, and job tenure with the obedience of PPE usage to prevent occupational disease because of talc powder among cosmetic division workers at PT X. The study used an analytical survey research method with a cross-sectional approach. The sample was 48 people using the Total Sampling technique. Statitiscal test using Chi-Square Test. Results: The result of the test showed there is a relationship between respiratory symptoms (p-value = 0,024) and knowledge (p-value = 0,006) variable with the obedience of PPE usage among workers (p-value = 0,006), to be found there is a respondence who has less knowledge regarding occupational safety and health is considered to have 18.3 times more risk of being disobedient in using PPE, while there is no relationship between education (p-value = 0,161) and job tenure (p-value = 1.000) with the obedience of PPE usage among cosmetic division workers at PT X. Conclusion: There is a relationship between respiratory symptoms and knowledge with the obedience of PPE usage among the workers, and it’s recommended to company owner to provide training for the workers about the importance of PPE usage that mainly corrects and precisely, also doing supervision and daily checking on the workers before, during, and after work.
Polynomial Utility

We approximate the utility function by polynomial series and solve the related dynamic portfolio optimization problems. We study the quality of the approximation for the Taylor and Bernstein series in response to the center and the degree of the expansion. The issue of time-inconsistency, arising from a dynamically adapted center of the expansion, is approached by equilibrium theory. In the numerical study we focus on two speciﬁc utility functions: For power utility, access to the optimal portfolio allows for a more complete illustration of the approximations; for the S-shaped utility function of prospect theory, the use of equilibrium theory allows for approximating the solution to the (obviously interesting but yet unsolved) case of current wealth as a dynamic reference point.
The Effect of Monodentate Co-Ligands on the Properties of Pt(II) Complexes Bearing a Tridentate C^N*N-Luminophore

In this study, the insertion of different monodentate co-ligands on Pt(II) complexes bearing a monoanionic C^N*N luminophore as a tridentate chelator was achieved beyond the previously reported chlorido- ([PtCl(L)]) and cyanido-decorated ([PtCN(L)]) analogues. To investigate the impact of the auxiliary ligand on the photophysical properties, we introduced a neutral carbonyl-ligand and observed a lower photoluminescence quantum yield (ΦL) than with a cyanido moiety. However, the direct substitution of the chlorido co-ligand by a NO-related derivative was not successful. Interestingly, the attempted reduction of the successfully inserted nitrito-N-ligand in [PtNO2(L)] resulted in the oxidation of the Pt(II)-center to Pt(IV), as demonstrated by X-ray diffractometry. For comparison, the trifluoroacetato Pt(II) and chlorido Pt(IV) complexes ([PtTFA(L)] and [PtCl3(L)], respectively) were also synthesized. The photophysical characterization revealed similar photoluminescence profiles for all complexes, indicating a weak effect of the co-ligand on the excited state; in fact, all complexes display emission from metal-perturbed ligand-centered states (even the Pt(IV) species). Nonetheless, longer excited state lifetimes (τav) suggest a reduced thermally-activated radiationless deactivation via metal-centered states upon exchange of the chlorido units for other monodentate entities, yet without significantly improving the overall ΦL at room temperature. The irreversible oxidation waves (measured via cyclic voltammetry) mostly stem from the Pt(II)-center; the co-ligand-related drop of these potentials correlates with the increasing σ-donating capacities of the ancillary ligand. In summary, an enhanced π-acceptor capacity does not necessarily improve the ΦL and can even impair radiative rates by compromising the perturbative participation of the metal center on the emissive triplet state; in addition, strong σ-donor abilities improve the phosphorescence efficiencies by hampering the thermal population of dissociative electronic configurations related to the participation of antibonding d*-orbitals at the metal center.
Influence of the surface heating on Langmuir circulation

Large-eddy simulation of the oceanic mixed layer showed that Langmuir circulation (LC) is weakened under the surface heating and is ultimately broken down if the intensity of the surface heating becomes sufficiently strong. The critical condition for the breakdown of LC was mainly determined by the Hoenikker number Ho, and the transition occurs in the range Ho ; 1‐2. The breakdown of LC leads to a drastic change in the characteristics of the oceanic mixed layer, such as the variation of the rms horizontal velocities with time, the ratio of the horizontal spectra of vertical velocity field, and the pitch. The stability condition for LC suggested by Leibovich was still observed in this simulation. Furthermore, it was found that LC is largely responsible for the formation of a thermocline and the maintenance of a well-mixed layer above it, and the depth of a thermocline was estimated in that case.
Influence of Soil Moisture on Boundary Layer Cloud Development

Abstract The daytime interaction of the land surface with the atmospheric boundary layer (ABL) is studied using a coupled one-dimensional (column) land surface–ABL model. This is an extension of earlier work that focused on modeling the ABL for 31 May 1978 at Cabauw, Netherlands; previously, it was found that coupled land–atmosphere tests using a simple land surface scheme did not accurately represent surface fluxes and coupled ABL development. Here, findings from that earlier study on ABL parameterization are utilized, and include a more sophisticated land surface scheme. This land surface scheme allows the land–atmosphere system to respond interactively with the ABL. Results indicate that in coupled land–atmosphere model runs, realistic daytime surface fluxes and atmospheric profiles are produced, even in the presence of ABL clouds (shallow cumulus). Subsequently, the role of soil moisture in the development of ABL clouds is explored in terms of a new relative humidity tendency equation at the ABL top w.
Rapid Drought Stress Detection in Plants Using Bioimpedance Measurements and Analysis

Smart farming is the targeted use of phenotyping for the rapid, continuous, and accurate assessment of plant health in the field. Bioimpedance monitoring can play a role in smart farming as a phenotyping method, which is now accessible thanks to recent efforts to commoditize and miniaturize electronics. Here, we demonstrate that bioimpedance measurements reflect the physiological changes in live plant tissue with induced alterations in their environmental conditions. When plants were exposed to $-$1.0 MPa polyethylene glycol, to simulate drought conditions, the extracellular resistance was observed to increase prior to the intercellular resistance, where the low frequency bioimpedance measurements increased by 25% within one hour. Similar patterns were observed when drought stress was applied to the plants by water withholding, with a bioimpedance increase within a matter of a few hours. The bioimpedance measurements were also compared with leaf relative water content, imaging, and field transpirable soil water, which reinforced these findings. These preliminary results suggest that bioimpedance can function as a phenotyping tool for continuous and real time monitoring of plant stress to allow the development of strategies to prevent damage from environmental stresses such as drought.
Areal Extent of Seasonal Snow Cover in a Changed Climate

In mountain snow basins, a change in climate will likely cause a change in the basin snow cover extent. A procedure for evaluating whether a given climate change scenario will speed up or slow down the seasonal decrease of snow covered area is outlined with hypothetical examples for a simple basin. This procedure has two main purposes. First, it can be used to generate snow covered area data in a new climate for input to runoff models such as the Snowmelt-Runoff Model (SRM). Second, it could potentially be used to provide input to climate models that require knowledge of the land area covered by snow at a given time. A computer program is now operational for use on real basins and is demonstrated on the Rio Grande basin in Colorado and the Illecillewaet River basin in British Columbia.
PARKS: THE INTERNATIONAL JOURNAL OF PROTECTED AREAS AND CONSERVATION

The Ruvuma Elephant Project (REP) area is located in the United Republic of Tanzania and lies between Selous Game Reserve in southern Tanzania and Niassa National Reserve in Mozambique. The area is dominated by miombo woodland with a mosaic of different land uses. Unfortunately, this mosaic of wildlife, forests, people with a variety of often competing land uses, as well as the presence of an international border close by, helps make it one of the worst impacted areas in Africa in terms of elephant poaching for the ivory trade. Despite the recent resurgence of elephant poaching in Tanzania, and in particular within the Selous ecosystem which includes the REP area, the results show the project has managed to curb elephant poaching. It is believed that the local elephant population within the REP area should remain stable if current anti-poaching input levels can be maintained. The success of the REP may be attributed to various approaches and activities that are beyond the scope of conventional anti-poaching units or programmes. These include a strong focus on: working with communities to achieve their reciprocal support and participation; joint patrols and operations; and intelligence-led operations within and outside the protected areas.
Thermodynamic Modeling of Crustal Melting Using Xenolith Analogs from the Cortlandt Complex, New York, USA

Emplacement of gabbroic magmas of the Cortlandt Complex, New York, induced rapid (less than 5 years) heating of pelitic schist protoliths (up to � 1200 � Ca t� 0� 9 GPa). Xenoliths entrained within the mafic melt experienced significant melting and melt-segregation, now represented as a series of complex fabrics and structures comprising Si-rich veins and an Al-rich, Si-poor residuum (a typical assemblage is spinel‐magnetite‐ilmeno-hematite‐sillimanite 6 sapphirine 6 corundum). Subtle microscopic textures in the residuum include corundum‐magnetite symplectites, which are interpreted to be a result of oxidative breakdown of the hercynite component in spinel during cooling. Aluminous orthopyroxene selvages in veins have typically grown along the contact between the residuum and quartzofeldspathic ‘melt’. Hybrid monzonorite and monzodiorite crop out near the xenoliths and are interpreted to represent assimilation by the mafic magma of some of the partial melt produced from the pelitic xenoliths. Equilibrium-melting and batch-melting thermodynamic models track the evolution of the pelitic schist, its partial melt upon heating, and the residuum from melting and melt extraction. We introduce a ‘filter-pressing’ cooling calculation to simulate the crystallization of the quartzofeldspathic veins. Modeling results yield the following: (1) an initial partial melt that, when mixed with the estimated composition of the mafic melt, produces a hybrid igneous rock consistent with the monzonorite found near the xenolith; (2) a high-T melt that upon ‘filter-pressing’ crystallization produces a mineral assemblage that texturally and compositionally corresponds to the quartzofeldspathic veinlets retained in the samples within xenolith interiors; (3) a residual material that, when oxidized, resembles the aluminous assemblages in the residuum. Modeling of crystallization of the high-T melt predicts early orthopyroxene formation, with the Al content of orthopyroxene consistent with that of analyzed selvage pyroxene. We propose that this pyroxene reflects a primary melt crystallization phase rather than reaction-rim margins of the veins against residual matrix.