cssi/SciSciGPT-SciSciNet huggingface dataset:
Analysis of food contamination caused by lead,cadmium,mercury,aluminum and arsenic in Hangzhou in 2007

Objective:The study was conducted to investigate the food contamination including lead,cadmium,mercury,aluminum and arsenic in Hangzhou,Zhejiang.Methods:According to the recommended items by the national food contamination monitoring system and the global environmental monitoring system on food,lead,cadmium and mercury contamination in local food including cereal,fruits,poultry products,and aquatic products,constituting 122 samples of 40 kinds from 7 categories,was monitored,as well as aluminum in cakes and arsenic in pork.Results:The positive rates of lead,cadmiun,mercury,aluminum and arsenic in local food of Hangzhou were 56.56%(69/122/),90.98%(111/122),81.97%(100/122),84.00%(21/25) and 100.00%(10/10),while the exceeding rate of lead,cadmiun,mercury,aluminum and arsenic in food on the basis of the GB were 4.10%(5/122),7.38%(9/122),9.02%(11/122),32.00%(8/25),0.00%(0/10),respectively.Conclusion:It is necessary to further strengthen the food safety control for monitoring the food pollution dynamics.
P5: SYSTEMIC MASTOCYTOSIS PRESENTING AS CARDIAC TAMPONADE WITH CD25+ PERICARDIAL MAST CELLS

Purpose of Study Case. Methods Used Descriptive. Summary of Results A 59 year old man with a history of lymphadenopathy, presented with shortness of breath and pleuritic chest pain since three days. A hyperpigmented maculopapular rash with urticaria was present along with multiple syncopal episodes and chronic diarrhea. CT scan of the abdomen in 2006 revealed lymphadenopathy, hepatosplenomegaly, and osteosclerosis. Inguinal and cervical lymph node biopsies in 2006 and 2012, and two bone marrow biopsies in 2012 were negative for malignancy. In 2009, he was diagnosed with non-ischemic cardiomyopathy with an ejection fraction of 40%. Peripheral blood, lymph node, and bone marrow flow cytometry were also unrevealing. On admission, the eosinophil count on admission was 500/µL. Echocardiography showed a large pericardial effusion with impaired right ventricular filling and significant respiratory variation in transmitral flow velocity. A pericardial window was placed, with drainage of approximately 1 liter of exudative fluid. During the surgery, the patient suffered sudden hypotension requiring epinephrine infusion. Tryptase levels drawn were 115 and 154 ng/ml. Pericardial tissue showed scattered c-Kit + and CD25 + mast cells and blood PCR showed D816V mutation in the c-KIT gene. Re-stained stomach biopsy specimens from 2006 showed two clusters of c-Kit + and CD25 + mast cells. A bone marrow biopsy showed aggregates of c-Kit + , tryptase + , CD25 + mast cells consistent with Systemic Mastocytosis. The transient hypotension was likely due to distributive shock from mast cell degranulation. Hyperactive mast cells may have served as mediators of the inflammatory response, contributing to production of the pericardial effusion leading to tamponade. Conclusions SM with tamponade.
Orientation correlation and local field in liquid nitrobenzene

Hyper-Rayleigh scattering (HRS) is sensitive to long-range molecular orientation correlation in isotropic liquids composed of dipolar molecules. Measurements of the polarization, angle, and spectral dependence for HRS from liquid nitrobenzene (NB) are analyzed to determine the NB molecular orientation correlations at long range. The longitudinal and transverse orientation correlation functions for r > 3 nm are BL(r) = (a/r)3 and BT(r) = − BL(r)/2, where a = 0.20 ± 0.01 nm. Measurements of HRS induced by dissolved ions are also analyzed and combined with molecular dynamics simulation and dielectric response results, to determine the molecular dipole moment μ = 3.90 ± 0.04 D, Kirkwood orientation correlation factor gK = 0.68 ± 0.02, and local field factor f(0) = 0.85 ± 0.04 × Onsager local field factor in liquid nitrobenzene.
A Multiple Balance Approach for Differencing the Sn Equations

A new and promising approach for differencing the Sn equations is introduced. This scheme is characterized by the use of the standard balance equation for each discrete phase-space cell together wi...
LC–MS/MS determination of d-mannose in human serum as a potential cancer biomarker

Several metabolites in human serum have been identified as potential cancer biomarkers for early detection. This study focuses on the LC-MS/MS method development and validation of d-mannose in human serum. Surrogate blank serum, coupled with stable isotope d-mannose-13C6, as internal standard, was used for generating standard curves ranging from 1 to 50μg/mL. Separation was achieved by an Agilent 1200 series HPLC equipped with a SUPELCOGELTM Pb, 6% Crosslinked column with HPLC water as a mobile phase at flow rate of 0.5mL/min at 80°C. Mass detection was performed under negative ionization electrospray. Inter- and intra-day accuracy and precision were <2%. The extraction recovery and matrix effect were 104.1%-105.5% and 97.0%-100.0%, respectively. This method was successfully applied for the quantification of d-mannose in the serum samples of 320 esophageal cancer patients and 323 healthy volunteers. We report a simple, specific and reproducible LC-MS/MS method for the quantification of d-mannose in human serum as a potential cancer biomarker.
Non-Intrusive Energy Disaggregation Using Non-Negative Matrix Factorization With Sum-to-k Constraint

Energy disaggregation or non-intrusive load monitoring addresses the issue of extracting device-level energy consumption information by monitoring the aggregated signal at one single measurement point without installing meters on each individual device. Energy disaggregation can be formulated as a source separation problem, where the aggregated signal is expressed as linear combination of basis vectors in a matrix factorization framework. In this paper, an approach based on Sum-to-k constrained non-negative matrix factorization (S2K-NMF) is proposed. By imposing the sum-to- k constraint and the non-negative constraint, S2K-NMF is able to effectively extract perceptually meaningful sources from complex mixtures. The strength of the proposed algorithm is demonstrated through two sets of experiments: Energy disaggregation in a residential smart home; and heating, ventilating, and air conditioning components energy monitoring in an industrial building testbed maintained at the Oak Ridge National Laboratory. Extensive experimental results demonstrate the superior performance of S2K-NMF as compared to state-of-the-art decomposition-based disaggregation algorithms.
Fundamental Equations and Solutions

Every other day one may observe puzzling fluid mechanics phenomena. Such counter-intuitive examples include: (a) Keeping the tailgate of a pick-up truck up reduces aerodynamic drag (why?) and hence saves gasoline; although, most drivers intentionally keep it down and even install “airflow” nets to retain cargo when accelerating. (b) Under otherwise identical conditions, it is easy to blow out a candle but nearly impossible to suck it out. Why? (c) Very high (horizontal) winds can lift pitched roofs off houses. How? (d) When bringing a spoon near a jet, e.g., faucet stream, it gets sucked into the stream. Try it out and explain! (e) Chunks of metal are torn out from ship propellers at high speeds after a long period of time in operation. Why? (f) The long hair of a girl driving a convertible is being pushed into her face rather than swept back. How come? (g) A snowstorm leaves a cavity in front of a pole or tree and deposits snow behind the “vertical cylinder.” Impossible? (h) Three-dimensional effects in river bends create unusual (axial) velocity profiles right after the bend and subsequently, lateral material transport results in shifting riverbeds. Explain! (i) Certain non-Newtonian fluids when stirred in an open container climb up the rotating rod, rather than forming a depressed, parabolic free surface. Weird! (j) Airplanes flying through microbursts (or high up in the blue sky) may crash. What is happening during these two very different weather types? (k) Racecar (and motorcycle) tires are hardly threaded but passenger cars are. Why? (l) Consider a tsunami (Japanese for “great harbor wave”) hitting either a very shallow shore or a deep sea near the shoreline. Describe cause-and-effect for these two scenarios. (m) Wildfires spread rapidly because of their own local weather pattern they create. Describe the underlying convection system, and how “back-fires” work. (n) A very small amount of carbon nanotubes added to a liquid increases measurably the apparent (or effective) thermal conductivity, k, of the dilute mixture (called a nanofluid) when compared to k [W/(m K)] of the pure base fluid. Why? (o) Gas flow in microchannels may exhibit significantly higher flow rates than predicted by conventional theory. What’s happening?