cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chern-Simons effect on the dual hydrodynamics in the Maxwell-Gauss-Bonnet gravity
Creators: name: Hu, Ya-Peng
name: Park, Chanyong
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Following the previous work 1103.3773, we give a more general and systematic discussion on the Chern-Simons effect in the 5-dimensional Maxwell-Gauss-Bonnet gravity. After constructing the first order perturbative black brane solution, we extract the stress tensor and charge current of dual fluid. From these results, we find out the dependence of some transport coefficients on the Gauss-Bonnet coupling $α$ and Chern-Simons coupling $κ_{cs}$. We also show that the new anomalous term can provide an additional contribution to the anomalous chiral magnetic conductivity.
description: 15 pages, no figure, published version by PLB
Temporal adjustments of a streambed following an episodic sediment supply regime
Creators: name: Von Flotow, Claudia
Publisher: name: University of British Columbia
Year: 2013

description: The objective of this research is to evaluate temporal adjustments of a streambed surface due to changes in the sediment supply regime. To achieve the goals, laboratory experiments were conducted in an 18 m long, 1 m wide flume with a gradient of 0.0218. The bed was brought to an armored state by running water with no sediment feed before releasing a sequence of sediment pulses. Water discharge and grain size distribution of the sediment feed were held constant over the set of experimental runs, while supply input rates and magnitudes varied. Sediment flux at the outlet of the flume was continuously measured. At frequent time intervals, bed surface texture, 1 mm vertical resolution bed elevation, and microtopographical cluster features were measured over a two meter section of the flume bed. Instantaneous three-dimensional observations of flow velocities were made using an Acoustic Doppler Velocimeter. Surface texture adjustments in response to the sediment supply regime followed similar patterns between all runs involving pulses of sediment in that (1) the D₁₆ – the diameter at which 16% of the particles are smaller than – was the most variable characteristic grain size value and (2) medium-gravel patch areas were least variable, likely due to higher relative mobility of fine material. Fine-gravel patch areas developed following sediment pulses and persisted over time even once the overall characterization of the bed had returned to an armored state. Increases in bed roughness, quantified by the standard deviation of bed elevations (σz), were consistently paralleled with increases in the number of identified clusters and their combined surface area. Cluster formation was seemingly random, but expansion occured only once surface texture became relatively coarse and bed roughness increased. These results inform about the degree of bed surface evolution complexity under conditions of variable sediment supply and can be linked to observations and predictions of sediment transport in field settings.
Minimal Doubling Fermion and Hermiticity
Creators: name: Kamata, Syo
name: Tanaka, Hidekazu
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences
subject: 81T25

description: We analyze the lattice fermion kinetic term using PT symmetry, R-hermiticity, and $γ_{5}$-hermiticity. R-hermiticity is a condition for Hermite action and it is related to $γ_{5}$-hermiticity and PT symmetry. Assuming that a translation-invariant kinetic term with continuum and periodic function does not have PT symmetry, it can have R-hermiticity or $γ_{5}$-hermiticity. We prove that a kinetic term with continuum and periodic function that is PT symmetric does not reduce doublers. As a simple example, we analyze the two-dimensional two-flavor Gross-Neveu model with minimal doubling fermions. The minimal doubling fermions break PT symmetry and R-hermiticity, hence complex or non-Hermite coupling constants are caused by quantum correction.
description: 12 pages, 7 figures
Decolonizing Visuality: The Artistic and Social Practices of Andrea Carlson
Creators: name: Olesiejuk, Oliwia
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

The article demonstrates how images of the Mississippi River presented in European Mississippi. An Anthropocene River project, form knowledge about this region in relation to global challenges of the climate crisis. In the text, I examine visualizations of the river created by the Indigenous artist Andrea Carlson, whose works relate to decolonial methodologies and restore places, communities, beliefs and philosophies eradicated in colonialist practices. Visuality in Carlson’s work isn’t frozen in a place and time, but constitutes a type of social practice in which knowledge is produced. In analysing her works, I take into account their processuality: that, which took place before their creation, what they refer to, what they reveal, and what the process of their creation.

description: JOLMA
Shockley model description of surface states in topological insulators
Creators: name: Pershoguba, Sergey S.
name: Yakovenko, Victor M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that the surface states in topological insulators can be understood based on a well-known Shockley model, a one-dimensional tight-binding model with two atoms per elementary cell, connected via alternating tunneling amplitudes. We generalize the one-dimensional model to the three-dimensional case corresponding to the sequence of layers connected via the amplitudes, which depend on the in-plane momentum p = (p_x,p_y). The Hamiltonian of the model is described a (2 x 2) Hamiltonian with the off-diagonal element t(k,p) depending also on the out-of-plane momentum k. We show that the complex function t(k,p) defines the properties of the surface states. The surface states exist for the in-plane momenta p, where the winding number of the function t(k,p) is non-zero as k is changed from 0 to 2pi. The sign of the winding number defines the sublattice on which the surface states are localized. The equation t(k,p)=0 defines a vortex line in the three-dimensional momentum space. The projection of the vortex line on the two-dimensional momentum p space encircles the domain where the surface states exist. We illustrate how our approach works for a well-known TI model on a diamond lattice. We find that different configurations of the vortex lines are responsible for the "weak" and "strong" topological insulator phases. The phase transition occurs when the vortex lines reconnect from spiral to circular form. We discuss the Shockley model description of Bi_2Se_3 and the applicability of the continuous approximation for the description of the topological edge states. We conclude that the tight-binding model gives a better description of the surface states.
description: 18 pages, 17 figures; version 3: Sections I-IV revised, Section VII added, Refs. [33]-[35] added; Corresponds to the published version
EUS-FNA Diagnosis Using Pro-Core Needle for Fine Needle Biopsy (FNB) and EUS-Tattooing of a Small Pancreatic Tumor for Laparoscopic Localization
Creators: name: Fabbri, Carlo
name: Zanini, Nicola
name: Masetti, Michele
name: Polifemo, Anna Maria
name: Fiscaletti, Marta
name: Luigiano, Carmelo
name: Maimone, Antonella
name: D’Imperio, Nicola
name: Jovine, Elio
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context Endoscopic ultrasonography (EUS) can show pancreatic tumors of few millimeters; nowadays, in the years of laparoscopic approach, the most difficult and time-consuming issue can be how to identify a tumor throughout the pancreatic parenchyma in order to select the site where to transect the pancreas. Preoperative EUS-tattooing could be of help in locating small pancreatic tumors during pancreatic resections. Case report Because of the onset of recurrent mild abdominal pain and diarrhea lasting for 4 months, a 70-year-old woman performed a trans-abdominal US that showed a hypoecogenic area of about 7 mm in the body of the pancreas. She had no other significant medical history or laboratory index. A CT-scan did not reveal any lesion throughout the pancreas. EUS examination (using a linear echoendoscope Fujinon) confirmed a hypoecogenic, solid, irregular mass of the body of the pancreas of about 7x4 mm. An EUS-guided fine-needle aspiration biopsy of the lesion was performed with a 22-gauge ProCore needle (Cook) and then, EUS-guided tattoo was performed using a 22 gauge EchoTip needle: the needle was inserted 3-5 mm proximal to the lesion and 2 mL of sterile purified carbon particles were injected under direct visualization. The patient received pre-procedural i.v. ciprofloxacin and no complications were observed. Cytological examination reported cells suspicious for adenocarcinoma. Nineteen days later, the patient underwent a laparoscopic left pancreatectomy. Ink was clearly visible on the anterior surface of the pancreas. Operative time was 110 minutes. Postoperative outcome was uneventful. Pathologic evaluation revealed a ductal adenocarcinoma of 5 mm in diameter with 17 negative nodes. Distance between pancreatic resection margin and cancer was 15 mm. Conclusions Preoperative EUS-tattooing could facilitate laparoscopic localization of small lesions. Further studies to assess safety, indications and limits are needed.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
Cytology and CEA from Cystic Fluid Have Marginal Utility in the Management of Pancreatic Cystic Neoplasms
Creators: name: Beltrame, Valentina
name: Dalla Bona, Enrico
name: Moletta, Lucia
name: Bocus, Paolo
name: Pasquali, Claudio
name: Sperti, Cosimo
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context The management of patients with cystic lesion of the pancreas still remains controversial, mainly because traditional cross-sectional imaging have a limited ability to differentiate benign from premalignant or malignant pancreatic cysts. Endoscopic ultrasound (EUS) has been increasingly used in clinical practice, and the value of sample cyst fluid with fine-needle aspiration for cytology (FNAC) or fluid CEA concentration has been reported to be useful for risk assessment of malignancy in pancreatic mucinous cysts [1]. Objective The aim of this study was to determine whether EUS and cyst fluid analysis for cytology and CEA determination may be predictive of malignancy in a series of patients investigated for cystic neoplasms of the pancreas. Methods From January 2009 to June 2011, 51 patients underwent EUS in the preoperative work-up for suspected cystic tumor of the pancreas. Whenever possible, aspiration of cyst fluid for cytology and cyst fluid analysis for CEA, CA 19-9, amylase and lipase determination were performed. All patients underwent also abdominal MRI and whole-body PET/CT. Patients with symptoms or radiological or cytological suspicion of premalignant or frankly malignant lesion underwent surgical treatment. In the remaining patients validation of diagnosis was obtained by follow-up. Median follow-up was 23 months, range 12-41 months. Results There were 24 males and 27 females (mean age 52.7 years, range 34-81 years). The mean cyst size was 3.4 cm (range 2.0-12 cm). In all, 10 patients were symptomatic and 24 underwent surgery (47%). Diagnosis included: 29 IPMNs, 7 malignant mucinous cysts, 2 solid-pseudopapillary tumors, 2 mucinous cystadenomas, 8 serous cystadenomas, 1 endocrine tumor, and 2 pseudocysts. Ctytology and cyst fluid analysis were performed in 49 patients. Cytology was positive in 3/7 malignancies, 1/2 solid pseudopapillary tumors, doubtful in 1 IPMN, negative in 28 benign cysts, inconclusive in the remaining 11 patients. CEA was >200 ng/mL in 8 patients (>1,000 ng/mL in 5): only 2 patients proved to have malignant tumor. PET/CT was positive in 6/7 malignant tumors and false positive in 1 IPMN with low-grade dysplasia. Conclusion The correct evaluation of pancreatic cystsic neoplasms remains challenging. The decision to proceed with operative or non operative management should not be based on cytology or CEA levels in the cyst fluid aspirate.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
Sorbent attrition in fluidized carbon dioxide capture systems
Creators: name: Knight, Andrew
Publisher: name: University of British Columbia
Year: 2013

description: As part of a collaborative Carbon Management Canada project, the extent and causes of attrition for three proposed carbon dioxide capture sorbents for fluidized power generation systems was investigated. The sorbents are crushed limestone, lime-based pellets containing calcium aluminate cement binder, and the same pellets with a mesoporous silica coating replacing the binder. The tested sorbents were provided by the University of British Columbia, the University of Ottawa/CANMET, and Laval University, respectively. The attrition testing equipment was an air-jet apparatus based on the ASTM D5757 standard, with several modifications to improve testing capabilities. The experiments were conducted under varying attrition test periods, gas velocities, temperatures, humidities, and initial particle sizes. Following each test cycle, particle size distributions of the produced fines and remaining bed material were analysed, and scanning electron microscopy was utilized to provide additional insight on attrition mechanism. The strengths and weaknesses of the ASTM standard were evaluated, and a new attrition testing standard is proposed to improve operability and reduce the equipment size and material requirements. The experimental results indicate that the cement-bound pellets attrit to the same extent or worse than crushed limestone, and are highly sensitive to humidity because of the hygroscopic cement and formation of calcium hydroxide. Calcination substantially increases the friability of the cement-bound pellets and limestone. Both materials approached complete degradation after 24 h during the 500°C tests. However, the silica coated pellets were found to have high attrition resistance in dry air at 500°C. After 24 hours of operation, compared to the coated sorbents, the lime mean diameter reduction and Air Jet Index were greater by factors of 2.4 and 3.4, respectively. The 1 μm thick and 5 μm thick-coating pellets experienced nearly the same mean reduction in diameter and production of fines, a key finding for future studies of the economic viability of the coating process. The tested materials experienced significant fragmentation, resulting in deviations from fines production models from the literature. The experimental results also displayed large variance in fines production rates during replicate trials. A novel model for mean diameter reduction rate is proposed, based on particle momentum.
Continuous transition of social efficiencies in the stochastic strategy Minority Game
Creators: name: Biswas, Soumyajyoti
name: Ghosh, Asim
name: Chatterjee, Arnab
name: Naskar, Tapan
name: Chakrabarti, Bikas K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We show that in a variant of the Minority Game problem, the agents can reach a state of maximum social efficiency, where the fluctuation between the two choices is minimum, by following a simple stochastic strategy. By imagining a social scenario where the agents can only guess about the number of excess people in the majority, we show that as long as the guess value is sufficiently close to the reality, the system can reach a state of full efficiency or minimum fluctuation. A continuous transition to less efficient condition is observed when the guess value becomes worse. Hence, people can optimize their guess value for excess population to optimize the period of being in the majority state. We also consider the situation where a finite fraction of agents always decide completely randomly (random trader) as opposed to the rest of the population that follow a certain strategy (chartist). For a single random trader the system becomes fully efficient with majority-minority crossover occurring every two-days interval on average. For just two random traders, all the agents have equal gain with arbitrarily small fluctuations.
description: 8 pages, 6 figs
Phylloserica Brenske 1899
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Phylloserica

description: Phylloserica Brenske, 1899c
[6 species].
Type species Pleophylla unicolor Snellen Van Vollenhoven, 1877, by subsequent designation of Lucas (1920).
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 146, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Alternatives to standard puncture initial data for binary black hole evolution
Creators: name: Reifenberger, George
name: Tichy, Wolfgang
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Standard puncture initial data have been widely used for numerical binary black hole evolutions despite their shortcomings, most notably the inherent lack of gravitational radiation at the initial time that is later followed by a burst of spurious radiation. We study the evolution of three alternative initial data schemes. Two of the three alternatives are based on post-Newtonian expansions that contain realistic gravitational waves. The first scheme is based on a second-order post-Newtonian expansion in Arnowitt, Deser, and Misner transverse-traceless (ADMTT) gauge that has been resummed to approach standard puncture data at the black holes. The second scheme is based on asymptotic matching of the 4-metrics of two tidally perturbed Schwarzschild solutions to a first-order post-Newtonian expansion in ADMTT gauge away from the black holes. The final alternative is obtained through asymptotic matching of the 4-metrics of two tidally perturbed Schwarzschild solutions to a second-order post-Newtonian expansion in harmonic gauge away from the black holes. When evolved, the second scheme fails to produce quasicircular orbits (and instead leads to a nearly head-on collision). This failure can be traced back to inaccuracies in the extrinsic curvature due to low order matching. More encouraging is that the latter two alternatives lead to quasicircular orbits and show gravitational radiation from the onset of the evolution, as well as a reduction of spurious radiation. Current deficiencies compared to standard punctures data include more eccentric trajectories during the inspiral and larger constraint violations, since the alternative data sets are only approximate solutions of Einstein's equations. The eccentricity problem can be ameliorated by adjusting the initial momentum parameters.
description: 11 pages, 11 figures, 1 appendix, typos corrected, removed duplicate reference, matches published version
Hidden symmetry of four-point correlation functions and amplitudes in N=4 SYM
Creators: name: Eden, Burkhard
name: Heslop, Paul
name: Korchemsky, Gregory P.
name: Sokatchev, Emery
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the four-point correlation function of stress-tensor supermultiplets in N=4 SYM using the method of Lagrangian insertions. We argue that, as a corollary of N=4 superconformal symmetry, the resulting all-loop integrand possesses an unexpected complete symmetry under the exchange of the four external and all the internal (integration) points. This alone allows us to predict the integrand of the three-loop correlation function up to four undetermined constants. Further, exploiting the conjectured amplitude/correlation function duality, we are able to fully determine the three-loop integrand in the planar limit. We perform an independent check of this result by verifying that it is consistent with the operator product expansion, in particular that it correctly reproduces the three-loop anomalous dimension of the Konishi operator. As a byproduct of our study, we also obtain the three-point function of two half-BPS operators and one Konishi operator at three-loop level. We use the same technique to work out a compact form for the four-loop four-point integrand and discuss the generalisation to higher loops.
description: 46 pages, 10 figures; v2: minor typos corrected
Prevalence of and Factors Associated with Emergency Contraceptive Use among Female Undergraduates in Arba Minch University, Southern Ethiopia, 2015: A Cross-Sectional Study
Creators: name: Yohannes Ayanaw Habitu , 1 Hedija Yenus Yeshita, Abel Fekadu Dadi,Desta Galcha
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: No abstract available for this resource
Contribution of HLA-DBR1*03 and DRB1*04 in Genetic Susceptibily of Autoimmune Pancreatitis: Preliminary Data
Creators: name: Cavestro, Giulia Martina
name: Martorana, Davide
name: Goni, Elisabetta
name: Frulloni, Luca
name: Amodio, Antonio
name: Vantini, Italo
name: Testoni, Pier Alberto
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context Autoimmune pancreatitis (AIP) is characterized by ductal and periductal inflammatory infiltration, storiform fibrosis, granulocytic-epithelial lesion, IgG4-positive plasmacells and patchy distribution. To date, AIP etiopathogenesis has not be yet elucidated; an immune-mediated pathogenesis has been postulated for AIP, mainly based on response to steroids. Lots of autoimmune diseases (Type 1 diabetes, Graves’ disease, Hashimoto thyroiditis, myastenia gravis, Addison’s disease, rheumathoid arthritis and systemic lupus erythematosus) are associated with HLA-DRB1*03 and ‑DRB1*04. A genetic predisposition has been also postulated in AIP on the basis of a strong association with HLA-DRB1*0405/DQB1*0401 haplotype in a Japanese population; any data are available on caucasian population. Objective The aim of this study is to confirm the role of HLA as genetic background of AIP in Italian population. Methods This is a multicenter, randomized, double-blind study. We enrolled 50 AIP patients (35 males; 15 females) compared with 350 healthy normal controls (176 males; 174 females). Written informed consent was mandatory. DNA typing of HLA was based on the PCR sequence–specific primers (SSP) methodology. Results We found a trend to significativity of HLA-DRB1*04 (OR=2.427; 95% CI=1.277-4.612; P=0.0053, Pearson; P=0.0689, Pc). Moreover, we jointly considered HLA-DBR1*03 and ‑DRB1*04 haplotype and we found a statistically significant association as previously demontrated in Type 1 diabetes, Graves' disease, Hashimoto thyroiditis, myastenia gravis, Addison's disease, rheumathoid arthritis and systemic lupus erythematosus (OR=18.889; P=0.00046; Fisher test). Conclusion A combined HLA-DBR1*03 and DRB1*04 haplotype is strongly associated with AIP in an Italian population. HLA-DRB1*04 allele may also be associated with AIP in a sample of the Italian population.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
Phyllotrochalus Brenske 1900
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Phyllotrochalus

description: Phyllotrochalus Brenske, 1900b
[3 species].
Type species Phyllotroclialus montanus Brenske, 1902, by subsequent monotypy.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 146, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Stochastic gradient descent on Riemannian manifolds
Creators: name: Bonnabel, Silvere
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Stochastic gradient descent is a simple approach to find the local minima of a cost function whose evaluations are corrupted by noise. In this paper, we develop a procedure extending stochastic gradient descent algorithms to the case where the function is defined on a Riemannian manifold. We prove that, as in the Euclidian case, the gradient descent algorithm converges to a critical point of the cost function. The algorithm has numerous potential applications, and is illustrated here by four examples. In particular a novel gossip algorithm on the set of covariance matrices is derived and tested numerically.
description: A slightly shorter version has been published in IEEE Transactions Automatic Control
Adenosquamous Pancreatic Cancer: 10 Years of Experience in a Center
Creators: name: Milanetto, Anna Caterina
name: Sperti, Cosimo
name: Moletta, Lucia
name: Alaggio, Rita
name: Pedrazzoli, Sergio
name: Pasquali, Claudio
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context Pancreatic adenosquamous carcinoma (PASC) represents 0.4-4% of the exocrine pancreatic neoplasms and has a more aggressive behavior than ductal adenocarcinoma, but its natural history is unknown. Objective To evaluate clinical presentation, preoperative investigations, surgical approach, histological features and follow up in PASC. Methods We reviewed clinical data of patients who underwent pancreatic resection for PASC in the last decade in our Department. Results From January 2002 to December 2011 we performed 211 pancreatic resections for malignant cancer of the exocrine pancreas and 4 of them were PASC (1.8%). All patients (4 M, averaging 63.7 years; range 54-76 years) had a tumor located in the pancreatic head. Symptoms of presentation were upper abdominal pain (2/4), hyperglycemia (2/4) and jaundice (1/4). CA 19-9 was high in 2/4 patients without jaundice. All patients underwent pancreatico­duodenectomy (mean tumor size 3.4 cm) and in 3/4 cases a vascular resection was performed. In 2/4 cases a preoperative pancreatic biopsy was positive for pancreatic adenocarcinoma. Follow up to December 2011 (mean follow up 21.3 months). Two patients had an intra-abdominal bleeding in the perioperative period: one died after an early reoperation and the other died of tumor progression after 14 months. Another patient died with hepatic relapse (follow up 8 months) and the last one developed an urothelial cancer but is still alive (follow up 42 months). Conclusion Surgical treatment is the only reasonable therapeutic approach for PASC, but early relapse is frequent. The role of non-operative therapies for PASC is less clear. If preoperatively known, PASC could be candidate to neoadjuvant therapy.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
Primary Clear Cell Carcinoma of Exocrine Pancreas: A Case Report
Creators: name: Milanetto, Anna Caterina
name: Moletta, Lucia
name: Liço, Valbona
name: Alaggio, Rita
name: Sperti, Cosimo
name: Pedrazzoli, Sergio
name: Pasquali, Claudio
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context According to WHO classification, primary clear cell carcinoma of the pancreas is rare and it is classified as a “miscellaneous” carcinoma. There is not an adequate systematic overview of this entity and the few reports lack detailed morphological and immunocytochemical data. Case report A 65-year-old man presented in March 2009 with dyspepsia and a feeling of epigastric mass since two months, with an increase of serum amylase and lipase. The US showed a hypoechoic mass of the pancreatic head (3 cm), confirmed by the abdominal MR, which also detected a solid hepatic lesion, without encasement of the mesenteric vessels. At the 18FDG-PET the lesion of the head of the pancreas had an increased tracer uptake (SUVmax 9.2; SUVmed 5.3) and CA 19-9 was 1,726 U/L. The patient underwent a palliative biliary and gastric bypass surgery and the histology of the hepatic lesion showed a metastasis of a clear cell adenocarcinoma. The post-operative course was uneventful. Then the patient received palliative radiotherapy and chemotherapy with gemcitabine and carboplatin. The patient died 23 months later of pancreatic cancer progression. Conclusion We presented a case of clear cell carcinoma of the pancreas with a single hepatic metastasis. Only few cases of clear cell carcinoma have been reported in the English literature. Clinical features and survival data were not significantly different from that of ductal adenocarcinoma.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
TA'LIM TIZIMINI KONVERGENTSIYALASHNING DASTURIY TA'MINOTI
Creators: name: Olimova, Bahora
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada ta'lim xizmatlarini  konvergentsiyalash jarayonida  katta ma'lumotlar  bazasini yaratishning ahamiyati va dolzarbliligi  hamda ularning nazariy hamda amaliy jihatlari yoritilgan va ushbu mavzu yuzasidan fikr mulohazalar kelitirib o'tilgan, bilimlar iqtisodiyoti iqtisodiy yo'nalishlari bo'yicha asoslangan yondashuv doirasida iqtisodiy yo'nalishdagi bo'lajak  mutaxassislarni tayyorlash maqsadi  kompetentsiyalarni shakllantirish bo'yicha aniq nazariy ma'lumotlar berilgan.
Deconfined quantum criticality and logarithmic violations of scaling from emergent gauge symmetry
Creators: name: Nogueira, Flavio S.
name: Sudbo, Asle
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We demonstrate that the low-energy effective theory for a deconfined quantum critical point in $d=2+1$ dimensions contains a leading order contribution given by the Faddeev-Skyrme model. The Faddeev-Skyrme term is shown to give rise to the crucial Maxwell term in the CP$^1$ field theory governing the deconfined quantum critical point. We derive the leading contribution to the spin stiffness near the quantum critical point and show that it exhibits a logarithmic correction to scaling of the same type as recently observed numerically in low dimensional models of quantum spin systems featuring a quantum critical point separating an antiferromagnetically ordered state from a valence bond solid state. These corrections, appearing away from upper or lower critical dimensions, reflect an emergent gauge symmetry of low-dimensional antiferromagnetic quantum spin systems.
description: 5 pages, 1 figure; v2: Text improved. The final third of the preprint has been thoroughly revised
An Intraductal Variant of Acinar Cell Carcinoma. Report of a Case
Creators: name: Moletta, Lucia
name: Milanetto, Anna Caterina
name: Alaggio, Rita
name: Sperti, Cosimo
name: Pedrazzoli, Sergio
name: Pasquali, Claudio
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context Pancreatic intraductal neoplasms in the past few years had increasing importance, as the incidence of these tumors (especially intraductal papillary mucinous neoplasms-IPMNs) has grown and their significance as precursors of invasive cancer is now better appreciated. Acinar cell carcinomas (ACCs) are typically solid tumors; however, a few cases of ACCs with intraductal growth pattern have been described in the literature. These kind of neoplasia can be easily mistaken for IPMNs. We report a case of an acinar cell carcinoma of the pancreatic head with a polipoid intraductal growth. Case report A 42-year-old woman was observed in our unit for recurrent epigastric pain. Blood exams showed a mild increase of serum lipase and amylase levels (141 and 116 U/L, respectively). Serum tumor markers were negative. An abdominal ultrasound showed an hypoechoic area in the pancreatic head, with a maximum diameter of 14.5 mm. The patient underwent also a CT scan which confirmed the pancreatic head mass and showed a dilated Wirsung duct. A 18F-fluorodeoxyglucose positron emission tomography showed a pathological uptake of the tracer in an area of 2 cm, corresponding to the pancreatic head, with a maximum SUV of 7.5. In the suspicion of a degenerated IPMN, the patient underwent a pancreaticoduodenectomy. The post-operative course was uneventful. Histology showed an acinar cell carcinoma of the pancreatic head with a polypoid intraductal growth (T2 N0 M0). The tumor size was 2.0x2.5 cm, the mitotic index was 30x10 HPF. Immunohistochemistry studies found trypsin expression and no mucin was detected. Surgical margins were free. The patient underwent six course gemcitabine chemotherapy and is still alive 62 months after surgery without evidence of recurrence. Conclusion A few cases of ACCs with intraductal growth pattern have been described in the literature. The clinical significance of this variant is difficult to determine; however, it appears that metastasis at presentation is less common than typically seen in ACCs.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
Microglandular Carcinoma of the Pancreas: A Case Report
Creators: name: Moletta, Lucia
name: Milanetto, Anna Caterina
name: Liço, Valbona
name: Alaggio, Rita
name: Sperti, Cosimo
name: Pedrazzoli, Sergio
name: Pasquali, Claudio
Publisher: name: JOP. Journal of the Pancreas
Year: 2012
Subjects: Meeting Abstracts; Pancreas

description: Context Microadenocarcinoma (MA) of the pancreas is a rare kind of neoplasm. The term microadenocarcinoma was first proposed for a subtype of pancreatic carcinoma by Cubilla and Fitzgerald in 1975 based largely on the morphological features: small crowded microglandular structures, forming a cribriform pattern, sometimes solid sheets. The status of microadenocarcinoma as an independent tumor entity is still a matter of controversy. We present a case of microglandular carcinoma of the pancreatic head. Case report A 77-year-old man was observed in our department for dyspepsia and important loss of weight. He underwent an abdominal ultrasound which showed a pancreatic head mass of 5.0x5.5 cm. CA 19-9 was 46,300 U/L (reference range: 0-37 U/L). The patient underwent also a CT scan and MRI which confirmed the pancreatic head mass. A 18F-fluorodeoxyglucose positron emission tomography showed a pathological uptake of the tracer in an area of 5 cm, corresponding to the pancreatic head, with a maximum SUV of 3.0. The patient underwent a pancreaticoduodenectomy with a Traverso-Longmire reconstruction. The postoperative course was uneventful. Histology revealed a microglandular carcinoma of the pancreatic head with ductal and acinar differentiation. The tumor size was 6.5x5.0 cm, the MIB1 was 70%. The immunohistochemical study showed positive staining of the neoplastic cells with CAM 5.2 antibodies and negative staining with a battery of neuroendocrine-related markers. The patient underwent chemotherapy with gemcitabine. He died of progression of disease 55 months after surgery. Conclusion MA is a rare pancreatic neoplasia. The main importance of recognizing this rare variant of pancreatic carcinoma lies in avoiding misdiagnosis with other primary and metastatic neuroendocrine neoplasms. Immunohistochemical studies will be of value in such cases for differential diagnosis.
description: JOP. Journal of the Pancreas, Vol 13, N° 5S (2012): September (Suppl.) - p. 548-650
Plaesioserica Brenske 1899
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Plaesioserica

description: Plaesioserica Brenske, 1899c
[1 species].
Type species Plaesioserica viridula Brenske, 1900, by subsequent monotypy.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 146, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Thermal Emission of WASP-14b Revealed with Three Spitzer Eclipses
Creators: name: Blecic, Jasmina
name: Harrington, Joseph
name: Madhusudhan, Nikku
name: Stevenson, Kevin B.
name: Hardy, Ryan A.
name: Cubillos, Patricio
name: Hardin, Matthew
name: Campo, Christopher J.
name: Bowman, William C.
name: Nymeyer, Sarah
name: Loredo, Thomas J.
name: Anderson, David R.
name: Maxted, Pierre F. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Exoplanet WASP-14b is a highly irradiated, transiting hot Jupiter. Joshi et al. calculate an equilibrium temperature Teq of 1866 K for zero albedo and reemission from the entire planet, a mass of 7.3 +/- 0.5 Jupiter masses and a radius of 1.28 +/- 0.08 Jupiter radii. Its mean density of 4.6 g/cm3 is one of the highest known for planets with periods less than 3 days. We obtained three secondary eclipse light curves with the Spitzer Space Telescope. The eclipse depths from the best jointly fit model are $0.224\%$ +/- $0.018\%$ at 4.5 μm and $0.181\%$ +/- $0.022\%$ at 8.0 μm. The corresponding brightness temperatures are 2212 +/- 94 K and 1590 +/- 116 K. A slight ambiguity between systematic models suggests a conservative 3.6 μm eclipse depth of $0.19\%$ +/- $0.01\%$ and brightness temperature of 2242 +/- 55 K. Although extremely irradiated, WASP-14b does not show any distinct evidence of a thermal inversion. In addition, the present data nominally favor models with day night energy redistribution less than $~30\%$. The current data are generally consistent with oxygen-rich as well as carbon-rich compositions, although an oxygen-rich composition provides a marginally better fit. We confirm a significant eccentricity of e = 0.087 +/- 0.002 and refine other orbital parameters.
description: 16 pages, 16 figures
Pressure-induced symmetry breaking in tetragonal CsAuI3
Creators: name: Wang, Shibing
name: Hirai, Shigeto
name: Shapiro, Maxwell C.
name: Riggs, Scott C.
name: Geballe, Theodore H.
name: Mao, Wendy L.
name: Fisher, Ian R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Results of in situ high pressure x-ray powder diffraction on the mixed valence compound Cs2Au(I)Au(III)I6 (CsAuI3) are reported, for pressures up to 21 GPa in a diamond anvil cell under hydrostatic conditions. We find a reversible pressure-induced tetragonal to orthorhombic structural transition at 5.5-6 GPa, and reversible amorphization at 12-14 GPa. Two alternative structures are proposed for the high-pressure orthorhombic phase, and are discussed in the context of a possible Au valence transition.
description: 7 figures
Incarceration and state terror: racial capitalism in the American South, 1865-1945
Creators: name: Donegan, Connor McElwee
Publisher: name: University of British Columbia
Year: 2013

description: This thesis presents a history of the State of Florida's convict leasing program (1877-1920) and situates critical developments in the prison system within concurrent transformations of racial capitalism in the American South. The social struggles that followed the Civil War forged the legal, political, economic, and ideological practices and strategies for white supremacy and capitalist production that remained predominant in the region until roughly World War II. Drawing extensively from archival sources including the reports of state prison supervisors and physicians, correspondence between prison officials and lessees of convicts, and official biennial reports on the state prison system, this research proposes a three-fold interpretation of the postbellum South's penal system. The prison system was, first of all, among the primary disciplinary mechanisms for planters and industrial capitalists who sought to maintain a pliable, submissive, and impoverished workforce through debt peonage arrangements and corporal punishment. Second, the prison system was a revenue-driven human trafficking network that redistributed labour to various capitalists throughout each state. I document how race, gender, ability, and the demands of industry were the primary determinants in the apprehension of prisoners and their distribution throughout the state of Florida. Lastly, this work argues that the prison system must be understood as a form of institutionalized state terrorism organized to permanently suppress the Black Freedom Struggle. The labour camps were juridically produced spaces of unlimited violence within which prisoners were subjected to debilitating and life-threatening beatings, medical malpractice, and execution. As a whole, this thesis uses Marx’s method to construct a thorough critique of the claim that proletarian labour is necessarily "free wage labour" by detailing the mutually reinforcing relationship between capitalist social relations, as expressed within the process of production, and forms of personal and group domination including enslavement, debt peonage, imprisonment, and male domination.
The modular S-matrix as order parameter for topological phase transitions
Creators: name: Bais, F. A.
name: Romers, J. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study topological phase transitions in discrete gauge theories in two spatial dimensions induced by the formation of a Bose condensate. We analyse a general class of euclidean lattice actions for these theories which contain one coupling constant for each conjugacy class of the gauge group. To probe the phase structure we use a complete set of open and closed anyonic string operators. The open strings allow one to determine the particle content of the condensate, whereas the closed strings enable us to determine the matrix elements of the modular $S$-matrix, also in the broken phase. From the measured broken $S$-matrix we may read off the sectors that split or get identified in the broken phase, as well as the sectors that are confined. In this sense the modular $S$-matrix can be employed as a matrix valued non-local order parameter from which the low-energy effective theories that occur in different regions of parameter space can be fully determined. To verify our predictions we studied a non-abelian anyon model based on the quaternion group $H=\bar{D_2}$ of order eight by Monte Carlo simulation. We probe part of the phase diagram for the pure gauge theory and find a variety of phases with magnetic condensates leading to various forms of (partial) confinement in complete agreement with the algebraic breaking analysis. Also the order of various transitions is established.
description: 37 pages
Between Cry and Hope. World War I in Croatian Literary Avant-Garde
Creators: name: Matičević, Ivica
Publisher: name: Studi Slavistici
Year: 2019

description: This paper is an informative and analytical description of the thematization/presence of the topic of World War I in the Croatian avant-garde creation (1917-1925). The theme of World War I plays such and important role in the poetry, prose and drama of literary Expressionism that without it, the corpus of artistic texts of Croatian expressionism and Croatian literary avant-garde would be significantly impoverished. The course of elaboration of war themes and of the very end of war in literary works went from a higher towards a lower degree of war reality denotation: the feeling of desperation due to helplessness, the underlining of the absurdity of war destructions, the ironic reflex over one more triumph of human stupidity, the creation of dark images of despair and decay, the fatalistic historical going around in circles, melancholy, nihilism, indifference due to the inability to change the state of war, memento mori... All these are the basic characteristics of the works written by Krleža, Strozzi, Donadini, Kosor and Cesarec. This paper also draws attention to the presence of the theme of the Great War, and to the echoes of war events in the manifestation texts of that period. Namely, it underlines the invocation and expectations of the arrival of art of the new times and new sensitivity, with the New Man as the symbol of salvation, renewal, and hope.
description: Studi Slavistici, Studi Slavistici XV, 2018, 2
A new probe of the small-scale primordial power spectrum: astrometric microlensing by ultracompact minihalos
Creators: name: Li, Fangda
name: Erickcek, Adrienne L.
name: Law, Nicholas M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The dark matter enclosed in a density perturbation with a large initial amplitude (delta-rho/rho > 1e-3) collapses shortly after recombination and forms an ultracompact minihalo (UCMH). Their high central densities make UCMHs especially suitable for detection via astrometric microlensing: as the UCMH moves, it changes the apparent position of background stars. A UCMH with a mass larger than a few solar masses can produce a distinctive astrometric microlensing signal that is detectable by the space astrometry mission Gaia. If Gaia does not detect gravitational lensing by any UCMHs, then it establishes an upper limit on their abundance and constrains the amplitude of the primordial power spectrum for k~2700 Mpc^{-1}. These constraints complement the upper bound on the amplitude of the primordial power spectrum derived from limits on gamma-ray emission from UCMHs because the astrometric microlensing signal produced by an UCMH is maximized if the dark-matter annihilation rate is too low to affect the UCMH's density profile. If dark matter annihilation within UCMHs is not detectable, a search for UCMHs by Gaia could constrain the amplitude of the primordial power spectrum to be less than 1e-5; this bound is three orders of magnitude stronger than the bound derived from the absence of primordial black holes.
description: 17 pages, 6 figures, references added and minor changes made to match version published in PRD