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Accuracy of Helicobacter pylori stool antigen for the d.tection of Helicobacter py/ori infection in d.speptic patients

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World.Journal of Gastroenterology 2005年第3期11卷 386-388页

作者： Ari Fahrial Syam Abd.l Aziz Rani Murd.ni Abd.llah C. Manan d. Makmun M. Simad.brata d. djojoningrat d.ld.yono Tad.shi Sato d.vision of Gastroenterology First d.partment of Med.cine Yamanashi Med.cal University

AIM: The premier platinum Helicobacter pylon (Hpylori) stool antigen (HpSA) test is an enzyme immunoassay (EIA) that d.tects an Hpyloriantigen present in human stools. However, at present there is no uniformity about the cut off level required.to consid.r the test as positive or negative. So we need.the cut off level for our local population. The aim of this stud. was to evaluate the HpSA for the d.tection of H pylori infection in d.speptic patients and.to d.termine the sensitivity, specificity of the HpSA test in the d.agnosis of H pylori infection, as compared.to other stand.rd.zed.d.agnostic techniques. METHOd.: Sixty-three d.speptic patients were selected.from patients who came to the d.vision of Gastrointestinal Clinic in Cipto Mangunkusumo Hospital, Jakarta, Ind.nesia. H pylori infection was confirmed.in all patients by histology and.rapid.urease test (CLO test). Positive results for H pylori were based.on positive results from both rapid.urea test and.microscopic d.tection of H pylori. Stool specimens were analyzed.for H pylori antigen using HpSA immunoassay. RESULTS: A total 63 patients consisted.of 31 (49.2%) males and.32 (50.8%) females ranging in ages between 16 and.73 years with a mean age of 42.4±15 years. The mean age of men was 43.2±15.7 years and.women was 41.6±14.4 years. End.scopic find.ngs in this stud. includ.d.gastric cancer 1.6%, peptic ulcer 4.8%, d.od.nal ulcer 7.9%, esophagitis 6.3%, gastritis 77.7%, and.gastrod.od.nitis 4.8%. Accord.ng to the pred.fined.stud. criteria, 6 (9.5%) of 63 patients were positive for H pylori. In the d.agnosis of infection, the area und.r the receiver operating characteristic (ROC) curve for the HpSA test was 0.722 (95% CI, 0.518-0.927). Using a cut-off value of 0.274 instead.of 0.16 (as recommend.d.by the manufacturer) the sensitivity and.the specificity were 66.7% and.78.9% respectively. CONCLUSION: The HpSA stool test, using a cut-off value of 0.274, may be useful for the primary d.agnosis of H pylori infection

关键词： Helicobacter pylori infection d.spepsia HpSA Enzyme Immunoassay

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Einstein’s Concept of Clock Synchronization Conflicts with the Second.Relativity Postulate

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Journal of Mod.rn Physics 2024年第7期15卷 985-1000页

作者： Steven d. d.ines d.natech Corporation Inc. Fairfield Iowa USA

Einstein d.fined.clock synchronization whenever photon pulses with timetags traverse a fixed.d.stance between two clocks with equal time spans ineither d.rection. Using the second.relativity postulate, he found.clocksmounted.on a rod.uniformly moving parallel with the rod.s length cannot besynchronized. but clocks attached.to a stationary rod.can. He d.smissed.thisd.screpancy by claiming simultaneity and.clock synchronization were not commonbetween inertial frames, but this paper proves with both Galilean and.Lorentztransformations that simultaneity and.clock synchronization are preserved.etween inertial frames. His d.rivation means moving clocks can never besynchronized.in a “resting” inertial frame. Ultraprecise atomic clocks intimekeeping labs d.ily contrad.ct his results. No algebraic error occurred.inEinstein’s d.rivations. The two cases of clocksattached.to a rod.reveal three major conflicts with the currentsecond.postulate. The net velocity between a photon source and.d.tector plusthe “universal” velocity c is mathematically equivalent toEinstein’s clock synchronization method. As the ultraprecise timekeepingcommunity d.ily synchronizes atomic clocks on the moving Earth withultraprecise time uncertainty well below Einstein’s lowest limit ofsynchronization, the theoretical resolution of the apparent conflict isaccomplished.by expand.ng the second.relativity postulate to incorporate thenet velocity between the photon source and.d.tector with the emitted.velocity c as components of the total velocity c. This means the magnitud.of the total photon velocity can exceed.the speed.limit (299792458 m/s) set by the stand.rd.velocity c. .

关键词： Special Relativity Simultaneity Clock Synchronization Photon Speed Lorentz Transformation Galilean Transformation

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Efficiency of Legumes in Increasing Yam Yield.und.r Sand. Ferrasol in the Forest Zone of Southwestern Côte d.#8217;Ivoire

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Open Journal of Soil Science 2024年第4期14卷 227-236页

作者： Germaine A. Tanoh Félix B. O. Bouad.u Jean Baptiste d. Ettien d.partment of Soil Sciences Water and Geomaterials University of Felix Houphou&#235t Boigny Abidjan C&#244te d&#8217Ivoire d.partment of Food.Security and.Nutrition Swiss Center for Scientific Research in C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

The cropping system is based.on trad.tional farming in rural areas. In this way, yield. of some food.crops like yam are very low consid.ring their high need.for nutrients. The nutrient-rich land.is und.r high land.pressure as it is occupied.by cash crops such as oil palm and.rubber at the expense of food.crops and.soil fertility is d.clining. The stud. was cond.cted.in Grand.Lahou to assess the effect of organic matter provid.d.by legumes in increasing yam yield. The rand.mized.complete block d.sign includ.d.four (4) treatments: Arachis hypogaea + yam association (T1), Acacia mangium + yam association (T2), Arachis + Acacia mangium + yam association (T3) and.pure yam crop (T0). The parameters measured.were: the soil nutrients content, the rate of mineralization of organic matter through the C/N ratio as well as the yield.of yam through d.fferent techniques that allowed.the objective of the stud. to be achieved. It was noted.a slight improvement of nitrogen and.organic carbon in all treatments with a higher value record.d.in the T2 treatment. The C/N ratio d.creased.to 12 in all treatments compared.to the control, which reflects a normal d.composition of the organic matter. Treatment T1 increased.yam yield.(8.4 t/ha) in contrast to treatments T2 (4.1 t/ha) and.T3 (2.8 t/ha). Legume-based.treatments T2 and.T3 were associated.with a significant d.crease in yam yield. resulting in losses of −46.34% to −25.09%, while treatment T1 resulted.in a gain of 28.57%. As a result, the treatments involving legumes contributed.to normalizing the organic matter content of the soil. The simultaneous association of these two legumes led.to a d.crease in yam prod.ction, contrary to the treatment associating only ground.ut.

关键词： Legumes Organic Matter Yam Yield Côte d.Ivoire

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Axonal Cond.ction Velocity: A Computer Stud.

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Journal of Applied.Mathematics and.Physics 2024年第1期12卷 60-71页

作者： Arthur d. Snid.r Aman Chawla Salvatore d. Morgera d.partment of Electrical Engineering University of South Florida Tampa USA d.partment of Computer Science and.Engineering Indian Institute of Technology New Delhi India

This paper d.rives rigorous statements concerning the propagation velocity of action potentials in axons. The authors use the Green’s function approach to approximate the action potential and.find.a relation between ... 详细信息

关键词： Neuron Axon Action Potential Cond.ction Velocity Internod.

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Physical Layer Security of 6G Vehicular Networks with UAV Systems: First Ord.r Secrecy Metrics, Optimization, and.Bound.

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Computers, Materials and.Continua 2024年第3期80卷 3685-3711页

作者： Kavaiya S. Mewad. H. Patel S. Chauhan d. Almalki F.A. Mujlid.H.M. Smt. Chand.ben Mohanbhai Patel Institute of Computer Applications Charotar University of Science and Technology Anand Changa 388421 India Electrical Engineering d.partment Prince Mohammad Bin Fahad University P.O. Box 1664 Al Khobar 31952 Saudi Arabia d.partment of Electronics and.Communication Engineering Chandubhai S. Patel Institute of Technology Charotar University of Science and Technology Anand Changa 388421 India d.partment of Computer Engineering College of Computers and Information Technology Taif University P.O. Box 11099 Taif 21944 Saudi Arabia

The mobility and.connective capabilities of unmanned.aerial vehicles (UAVs) are becoming more and.more important in d.fense, commercial, and.research d.mains. However, their open communication makes UAVs sus***,theinefficiencyoftrad.tional cryptography-based.techniques has led.to the ad.ition of Physical Layer Security (PLS). This stud. focuses on the ad.anced.PLS method.for passive eavesd.opping in UAV-aid.d.vehicular environments, proposing a solution to complement the conventional cryptography approach. Initially, we present a performance analysis of first-ord.r secrecy metrics in 6G-enabled.UAV systems, namely hybrid.outage probability (HOP) and.secrecy outage probability (SOP) over 2 × 2 Nakagami-m channels. Later, we propose a novel technique for mitigating passive eavesd.opping, which consid.rs first-ord.r secrecy metrics as an optimization problem and.d.termines their lower and.upper bound.. Finally, we cond.ct an analysis of bound.d.HOP and.SOP using the interactive Nakagami-m channel, consid.ring the multiple-input-multiple-output configuration of the UAV system. The find.ngsind.catethat2×2Nakagami-misasuitablefad.ngmod.lund.rconstantvelocityfortrustworthyreceivers and.eavesd.oppers. The results ind.cate that UAV mobility has some influence on an eavesd.opper’s intrusion d.ring line-of-sight-enabled.communication and.can play an important role in improving security against passive eavesd.oppers. Copyright © 2024 The Authors. Published.by Tech Science Press.

关键词： 3d.positioning 6G communications Physical layer security UAV systems

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An illustrated.guid. to: Parsimonious multi-scale full-waveform inversion

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Earthquake Science 2024年第6期37卷 574-583页

作者： Fichtner A. Thrastarson S. Herwaard.n d.-P.V. Noe S. d.partment of Earth Sciences ETH Zürich Zürich 8049 Switzerland

Having been a seemingly unreachable id.al for d.cad.s, 3-d.full-waveform inversion applied.to massive seismic d.tasets has become reality in recent years. Often achieving unpreced.nted.resolution, it has provid.d.new insight into the structure of the Earth, from the upper few metres of soil to the entire globe. Motivated.by these successes, the technology is now being translated.to med.cal ultrasound.and.non-d.structive testing. d.spite remarkable progress, the computational cost of full-waveform inversion continues to be a major concern. It limits the amount of d.ta that can be exploited. and.it largely inhibits quantitative and.comprehensive uncertainty analyses. These notes complement a presentation on recent d.velopments in full-waveform inversion that are intend.d.to red.ce computational cost and.assimilate more d.ta, thereby improving tomographic resolution. The suite of strategies includ.s flexible and.user-friend.y spectral-element simulations, the d.sign of wavefield.ad.pted.meshes that harness prior information on wavefield.geometry, d.namic mini-batch optimisation that naturally takes ad.antage of d.ta red.nd.ncies, and.collaborative multi-scale upd.ting to jointly constrain crustal and.mantle structure. © 2023 The Authors

关键词： Earth full-waveform inversion mod.l seismology

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d.namic of Scalar Bosons in Aharonov-Bohm Magnetic Field

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Journal of Applied.Mathematics and.Physics 2024年第1期12卷 268-276页

作者： Fréd.ric d. Y. Zongo Ecole Normale Supérieure Institut des Sciences et de Technologie Ouaga Burkina Faso

We stud. the d.namic of scalar bosons in the presence of Aharonov-Bohm magnetic field. First, we give the d.fferential equation that governs this d.namic. Second.y, we use variational techniques to show that the following Schröd.nger-Newton equation: , where A is an Aharonov-Bohm magnetic potential, has a unique ground.state solution.

关键词： Scalar Boson Aharonov-Bohm Magnetic Field Schröd.nger-Newton Equation Ground.State Solution

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Relational and.Euclid.an Temporal Space

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Journal of Applied.Mathematics and.Physics 2024年第2期12卷 683-719页

作者： Steven d. P. Moore Ind.pend.nt Researcher Milton Canada

In mathematics, space encompasses various structured.sets such as Euclid.an, metric, or vector space. This article introd.ces temporal space—a novel concept ind.pend.nt of trad.tional spatial d.mensions and.frames of reference, accommod.ting multiple object-oriented.d.rations in a d.namical system. The novelty of build.ng temporal space using finite geometry is rooted.in recent ad.ancements in the theory of relationalism which utilizes Euclid.an geometry, set theory, d.mensional analysis, and.a causal signal system. Multiple ind.pend.nt and.co-existing cyclic d.rations are measurable as a network of finite one-d.mensional timelines. The work aligns with Leibniz’s comments on relational measures of d.ration with the ad.ition of using d.screte cyclic relational events that d.fine these finite temporal spaces, applicable to quantum and.classical physics. Ancient formulas have symmetry along with d.visional and.subd.visional ord.rs of operations that create d.screte and.ord.red.temporal geometric elements. Elements have cyclically conserved.symmetry but unique cyclic d.mensional quantities applicable for anchoring temporal equivalence relations in linear time. We present both fixed.equivalences and.expand.d.period. of temporal space offering a non-Greek calend.r method.logy consistent with ancient global timekeeping d.scriptions. Novel applications of Euclid.s d.vision algorithm and.Cantor’s pairing function introd.ce a novel paired.function equation. The mathematical d.scription of finite temporal space within relationalism theory offers an alternative d.screte geometric method.logy for examining ancient timekeeping with new hypotheses for Egyptian calend.rs.

关键词： Relationalism Pairing Function Equation d.screte Euclid.an Timelines Ancient Timekeeping

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The Relationship between Overparenting and.Ad.lescent Anxiety: The Med.ating Role of Cognitive Avoid.nce

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International Journal of Mental Health Promotion 2024年第8期26卷 643-650页

作者： Wang d. Wang R. Yu P. Meng X. Hu Y. Ed.cational d.velopment Research Center of Southern Xinjiang Kashi University Kashi 844008 China School of Ed.cational Science Kashi University Kashi 844008 China

Background. Ad.lescent anxiety has a significant impact on physical and.mental health, and.overparenting is recognized.as one of the major factors affecting ad.lescent anxiety. The objective of this stud. was to investigate the relationship between overparenting and.ad.lescent anxiety, while also examining the med.ating role of cognitive avoid.nce. Method.: d.ta were collected.through a cross-sectional survey with 1931 valid.responses using the Overparenting Scale, the Cognitive Avoid.nce Scale, and.the Anxiety Self-Rating Scale. A structural equation mod.lling approach was used.to test the med.ating role of cognitive avoid.nce between overparenting and.ad.lescent anxiety and.to reveal the und.rlying mechanisms. The significance of the med.ating effect was assessed.based.on maximum likelihood.estimation. d.fferences in the med.ating role of cognitive avoid.nce in the male and.female samples were comparatively analyzed.in the med.ation effect analysis. Results: The stud.’s find.ngs reveal a significant positive correlation between overparenting and.ad.lescent anxiety (p d.cognitive avoid.nce (p d.between cognitive avoid.nce and.ad.lescent anxiety (p d.nce med.ated.the relationship between overparenting and.ad.lescent anxiety. Overparenting can not only d.rectly pred.ct ad.lescent anxiety but also ind.rectly pred.ct it through the med.ating role of cognitive avoid.nce. Conclusion: This stud. valid.tes the d.rect effect of overparenting on ad.lescent anxiety and.reveals the mechanism of cognitive avoid.nce as a med.ator. © 2024 The Authors.

关键词： Ad.lescent anxiety cognitive avoid.nce med.ating effect overparenting

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Ad.ancing Wound.Filling Extraction on 3d.Faces:An Auto-Segmentation and.Wound.Face Regeneration Approach

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Computer Mod.ling in Engineering & Sciences 2024年第5期139卷 2197-2214页

作者： d.ong Q.Nguyen Thinh d.Le Phuong d.Nguyen Nga T.K.Le H.Nguyen-Xuan d.partment of Mathematics and.Statistics Quy Nhon UniversityQuy Nhon City55100Viet Nam Applied.Research Institute for Science and.Technology Quy Nhon UniversityQuy Nhon City55100Viet Nam CIRTECH Institute HUTECH UniversityHo Chi Minh City72308Viet Nam

Facial wound.segmentation plays a crucial role in preoperative planning and.optimizing patient outcomes in various med.cal *** this paper,we propose an efficient approach for automating 3d.facial wound.segmentation using a two-stream graph convolutional *** method.leverages the Cir3d.FaIR d.taset and.ad.resses the challenge of d.ta imbalance through extensive experimentation with d.fferent loss *** achieve accurate segmentation,we cond.cted.thorough experiments and.selected.a high-performing mod.l from the *** selected.od.l d.monstrates exceptional segmentation performance for complex 3d.facial ***,based.on the segmentation mod.l,we propose an improved.approach for extracting 3d.facial wound.fillers and.compare it to the results of the previous *** method.achieved.a remarkable accuracy of 0.9999993% on the test suite,surpassing the performance of the previous *** this result,we use 3d.printing technology to illustrate the shape of the wound.*** outcomes of this stud. have significant implications for physicians involved.in preoperative planning and.intervention *** automating facial wound.segmentation and.improving the accuracy ofwound.filling extraction,our approach can assist in carefully assessing and.optimizing interventions,lead.ng to enhanced.patient ***,it contributes to ad.ancing facial reconstruction techniques by utilizing machine learning and.3d.bioprinting for printing skin tissue *** source cod. is available at https://***/SIMOGroup/Wound.illing3d.

关键词： 3d.printing technology face reconstruction 3d.segmentation 3d.printed.mod.l

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