bluuebunny/crossref_metadata_2025_split huggingface dataset:
Microvascular function has no menstrual‐cycle‐dependent variation in healthy ovulatory women
Authors: Ketel Iris J.G. , Stehouwer Coen D.A. , Serné Erik H. , Poel Danielle M. , Groot Leonieke , Kager Cathrien , Hompes Peter G.A. , Homburg Roy , Twisk Jos W. , Smulders Yvo M. , Lambalk Cornelis B. 
Published: October 2009

ABSTRACTObjective: Hyper‐ and hypoestrogenism that persist for a long time can affect vascular and metabolic function. However, it is not clear whether the same is true for subtle sex hormone changes (i.e., during the menstrual cycle).Methods:Twenty‐one healthy normal‐weight women with regular cycles were studied during the early‐follicular (day 3±2), late‐follicular (day 12±2), and midluteal (day 20±3) phases. Microvascular function was assessed by skin iontophoresis of acetylcholine (ACh) and sodium nitroprusside (SNP), by skin‐capillary recruitment after arterial and venous occlusion (i.e., capillaroscopy), and by Fourier analysis of resting skin laser Doppler flow at rest (i.e., vasomotion). Insulin sensitivity (i.e., homeostasis model assessment) and blood pressure were also determined during the study days.Results: Three women were excluded from analyses because they were anovulatory. Skin microvascular responses to ACh and SNP, capillary function, vasomotion, insulin sensitivity, and blood pressure did not differ between the three phases (P≥ 0.1). Further, microvascular function did not correlate with plasma‐estrogen levels (r= −0.06−0.2;P≥ 0.2).Conclusions: Microvascular function does not demonstrate a clear menstrual‐cycle–dependent variation.
Intervention Approach to the Menopausal Women in Rural Bangladesh
Authors: Yasmin Nahid , Sultana Sayeeda , Habib Shahin Akhter Jahan , Khatun Khodeza 
Published: October 2009

To compare the level of knowledge about menopause in terms of its cause, problems and care seeking pattern among the rural women after a health education intervention program. It was a cross sectional intervention type study. In the study, the outcome of intervention was obtained by comparing pre intervention and post intervention of same study population to test if there is any difference in knowledge level. The total intervention program was evaluated ranking their answers and found that before the intervention the only 27.8% respondents had some knowledge regarding menopause related problems and 72.2% had no such perception. After intervention it was observed that 49.27% respondents improved their knowledge, statistically it was found significant. The study was conducted to assess and compare the improvement of knowledge of rural women regarding menopause through educational interventions program. From the study findings, it revealed the significant achievement among the respondents regarding the knowledge on menopause, health care seeking behaviour through an educational intervention program imparted to them. The aim of intervention program is that there should be some degree of changes about knowledge, attitude and behaviour. From the intervention program knowledge of the rural women upgraded. Though this study may not necessarily reflect the actual picture. Through the study the intervention program was found very effective which might be replicate in the country through a national program. Key word: Knowledge on menopausal problems, Health care seeking pattern. DOI: 10.3329/bmj.v38i1.3580 Bangladesh Medical Journal 38(1) 2009 9-14
A Successful Outcome of Twin Pregnancy in Patient with Systemic Lupus Erythematosus - A Case Report
Authors: Akhtar Nahreen , Sultana Sayeeda , Habib Shahin Akhter Jahan 
Published: October 2009

A 28 years old lady was admitted in BSMMU with 4th gravida 33 wks. twin pregnancy with preeclampsia and anasarca. She is a known case of SLE for 4 years and was diagnosed at her 3rd pregnancy. At that time her antids DNA titre was 1100IU/ml. She was in prednisolone and aspirin. She was in remission phase and with advice of physician she got pregnancy. She was diagnosed as a case of twin pregnancy at 12 weeks of pregnancy. DOI: 10.3329/bmj.v38i1.3585 Bangladesh Medical Journal 38(1) 2009 35-36
Nosocomial Infection: General Principles and the Consequences, Importance of its Control and an Outline of the Control Policy - A Review Article
Authors: Khan SA 
Published: October 2009

Nosocomial Infections or more commonly known as Hospital Acquired Infection [HAI], in short , may be defined as "Any infection that is being acquired in a hospital, particularly when the source or the risk factor for it is one peculiar to the hospital". The matter of concern is that nosocomial infection or hospital acquired infection at the moment affect not less than 400,000 hospitalized patients at anytime in the world and are direct or contributory causes of death of more than 80,000 cases a year in the U.S.A. alone. Billions of dollars are used annually in the developed countries alone for the control of just these hospital acquired infections alone which reflect another aspect of the magnitude of the problem. The magnitude of the problems of the nosocomial infections in other countries is even more serious and in a developing country like Bangladesh, one could one assume (since there is no established recognized statistics) the pathetic picture in terms of morbidity, mortality as well as the invisible but very valuable economic loss.The other frustrating fact regarding the natural history of Nosocomial or Hospital Acquired Infections is that they can not be eradicated entirely; but many of them can be prevented by proper control measures. In places where control programmes can be implemented, there had been a proven reduction of morbidity and mortality. Furthermore, the money that can be saved by reduction of nosocomial infections is much more used for infection control. DOI: 10.3329/bmj.v38i2.3576 Bangladesh Medical Journal 38(2) 2009 60-64
A Big Picard Theorem for Holomorphic Maps into Complex Projective Space
Authors: Ye Yasheng , Ru Min 
Published: October 2009

AbstractWe prove a big Picard type extension theoremfor holomorphic maps f : X–A → M, where X is a complex manifold, A is an analytic subvariety of X, and M is the complement of the union of a set of hyperplanes in ℙn but is not necessarily hyperbolically imbedded in ℙn.
Dunford–Pettis Properties and Spaces of Operators
Authors: Ghenciu Ioana , Lewis Paul 
Published: October 2009

AbstractJ. Elton used an application of Ramsey theory to show that ifXis an infinite dimensional Banach space, thenc0embeds inX, ℓ1embeds inX, or there is a subspace ofXthat fails to have the Dunford–Pettis property. Bessaga and Pelczynski showed that ifc0embeds inX*, then ℓ∞embeds inX*. Emmanuele and John showed that ifc0embeds inK(X,Y), thenK(X,Y) is not complemented inL(X,Y). Classical results from Schauder basis theory are used in a study of Dunford–Pettis sets and strong Dunford–Pettis sets to extend each of the preceding theorems. The spaceLw*(X*,Y) ofw*–wcontinuous operators is also studied.
Involutions of RA Loops
Authors: Goodaire Edgar G. , Milies César Polcino 
Published: October 2009

AbstractLetLbe an RA loop, that is, a loop whose loop ring over any coefficient ringRis an alternative, but not associative, ring. Let ℓ ⟼ ℓθdenote an involution onLand extend it linearly to the loop ringRL. An element α ∈RLissymmetricif αθ= α andskew-symmetricif αθ= –α. In this paper, we show that there exists an involution making the symmetric elements ofRLcommute if and only if the characteristic ofRis 2 or θ is the canonical involution onL, and an involution making the skew-symmetric elements ofRLcommute if and only if the characteristic ofRis 2 or 4.
A Comment on “ 𝔭 < t”
Authors: Shelah Saharon 
Published: October 2009

AbstractDealing with the cardinal invariants 𝔭 and t of the continuum, we prove that m = p = ℵ2 ⇒ t = ℵ2. In other words, if MAℵ1 (or a weak version of this) holds, then (of course ℵ2 ≤ 𝔭 ≤ t and) 𝔭 = ℵ2 ⇒ 𝔭 = t. The proof is based on a criterion for 𝔭 < t.
A Note on Covering by Convex Bodies
Authors: Gábor Fejes Tóth 
Published: October 2009

AbstractA classical theorem of Rogers states that for any convex body K in n-dimensional Euclidean space there exists a covering of the space by translates of K with density not exceeding n log n + n log log n + 5n. Rogers’ theorem does not say anything about the structure of such a covering. We show that for sufficiently large values of n the same bound can be attained by a covering which is the union of O(log n) translates of a lattice arrangement of K.
Modular Reduction in Abstract Polytopes
Authors: Monson B. , Schulte Egon 
Published: October 2009

AbstractThe paper studies modular reduction techniques for abstract regular and chiral polytopes, with two purposes in mind: first, to survey the literature about modular reduction in polytopes; and second, to apply modular reduction, with moduli given by primes in ℤ[τ] (with τ the golden ratio), to construct new regular 4-polytopes of hyperbolic types ﹛3, 5, 3﹜ and ﹛5, 3, 5﹜ with automorphism groups given by finite orthogonal groups.
Intuitionistic Fuzzy γ-Continuity
Authors: Hanafy I. M. 
Published: October 2009

AbstractThis paper introduces the concepts of fuzzy γ-open sets and fuzzy γ-continuity in intuitionistic fuzzy topological spaces. After defining the fundamental concepts of intuitionistic fuzzy sets and intuitionistic fuzzy topological spaces, we present intuitionistic fuzzy γ-open sets and intuitionistic fuzzy γ-continuity and other results related topological concepts.
Group Actions on Quasi-Baer Rings
Authors: Jin Hai Lan , Doh Jaekyung , Park Jae Keol 
Published: October 2009

AbstractA ring R is called quasi-Baer if the right annihilator of every right ideal of R is generated by an idempotent as a right ideal. We investigate the quasi-Baer property of skew group rings and fixed rings under a finite group action on a semiprime ring and their applications to C*-algebras. Various examples to illustrate and delimit our results are provided.
Patterned Quasi‐Liquid Surfaces for Condensation of Low Surface Tension Fluids
Authors: Boylan Dylan , Monga Deepak , Guo Zongqi , Dosawada Pavan Sai , Shan Li , Wang Pengtao , Dai Xianming 
Published: April 2024

AbstractExtensive research concerns dropwise condensation of low surface tension fluids to promote energy efficiency and decarbonization in thermal energy systems. However, it is challenging as these fluids typically result in filmwise condensation. Drawing inspiration from the Namib desert beetle that enhances condensation through patterned wettability, conventional beetle‐inspired surfaces excel in water condensation but flood when condensing low surface tension fluids. In this work, a patterned quasi‐liquid surface is reported that achieves exceptional dropwise condensation of low surface tension fluids. The surface consists of alternating stripes with low surface energy, that is, a perfluoropolyether (PFPE) and fluorinated quasi‐liquid surface (FQLS), that shows ultralow contact angle hysteresis for ethanol and hexane. The PFPE stripes are slightly more slippery, acting as slippery bridges that accelerate droplet coalescence and removal. It is experimentally demonstrated that the striped PFPE‐FQLS pattern exhibits a heat transfer coefficient 85%, 330%, and 550% higher than that of PFPE, fluorinated silane, and filmwise condensation, respectively. This study reveals that a high contact angle is desired to sustain dropwise condensation, irrespective of contact angle hysteresis. These findings provide a new paradigm for promoting the dropwise condensation of low surface tension fluids and offer valuable insights into surface design for energy sustainability.
Mechanically Robust Reversibly Cross‐Linked Polymers with Closed‐Loop Recyclability for Use in Flexible Printed Circuit Boards
Authors: Wang Wenjie , Lu Xingyuan , Li Yixuan , Li Xiang , Sun Haoxiang , Sun Junqi 
Published: April 2024

AbstractIt remains a huge challenge to efficiently recycle the printed circuit boards (PCBs) because of the diversity and complexity of the PCBs in terms of material composition. The recycling of PCBs highly depends on the design of the polymers that make up the polymer substrates and conductive pastes. Herein, closed‐loop recyclable plastics for use as the polymer substrates and for the preparation of the conductive pastes are fabricated by dynamically cross‐linking phenylboronic acid‐functionalized poly(methylmethacrylate) (PMMA‐B) and poly(urea‐urethane) (PUU‐B) with boroxines. The closed‐loop recyclable plastic, which is denoted as PMMA‐PUU exhibits a breaking strength of 71.0 MPa and Young's modulus of 1.8 GPa. Because of the dynamic nature of boroxines, the PMMA‐PUU0.6 plastic can be depolymerized in the N, N‐dimethylacetamide/ethanol mixture solvent. The depolymerized PMMA and PUU can be efficiently recovered in high yields and purity through their solubility differences in selective solvents. Conductive pastes suitable for printing of electrical circuits are fabricated through complexation of Ag particles with PMMA‐PUU. PCBs composed of PMMA‐PUU substrates and PMMA‐PUU‐based conductive pastes are flexible, healable, and recyclable. The closed‐loop recycling of the PCBs enables the collection of highly purified Ag particles, PMMA‐B, and PUU‐B monomers even when the PCBs are mixed with polymer wastes.
Liquid Metal‐Enhanced Highly Adhesive Electrodes for Multifunctional Epidermal Bioelectronics
Authors: Cao Chunyan , Hou Changshun , Wang Xiong , Lv Dong , Ai Liqing , Feng Yaxiu , Chen Peiran , Wang Xuejiao , He Mingliang , Yao Xi 
Published: April 2024

AbstractLiquid metal (LM) bioelectronics find widespread uses in healthcare devices and medical implants. However, the current LM‐based electrodes suffer from achieving a combination of features including stable conductivity, high tissue adhesion, stability, good biocompatibility, degradability, and recyclability. In this work, a stable LM electrode is prepared with an extremely high adhesion strength (8.9 MPa), which is tunable in a wide range by introducing an adhesive ureidopyrimidinone (UPy)‐based polymer to harvest the abovementioned properties. With the help of dynamic LM particle‐polymer interactions in the polymer matrix, LMs can not only enhance the adhesion properties but also form a percolated network at a low LM loading (38 vol%) to achieve a high conductance stability (R/R0 = 0.76 at 100% strain). The high adhesion strength provides a highly stable electrical connection with rigid components with a high stretchability of 1154% when mounting a resistor, while a relatively low adhesion makes it a comfortable wounded skin‐interfaced electrode for accelerating wound healing. Taking advantage of their tunable surface adhesion and biocompatibility, the as‐prepared LM electrodes provide a more reliable and friendly approach to the development of healthcare devices.
Natural Killer Cell‐Derived Extracellular Vesicles as Potential Anti‐Viral Nanomaterials
Authors: Lim Siyoung A. , Ho Nathan , Chen Sophia , Chung Eun Ji 
Published: April 2024

AbstractIn viral infections, natural killer (NK) cells exhibit anti‐viral activity by inducing apoptosis in infected host cells and impeding viral replication through heightened cytokine release. Extracellular vesicles derived from NK cells (NK‐EVs) also contain the membrane composition, homing capabilities, and cargo that enable anti‐viral activity. These characteristics, and their biocompatibility and low immunogenicity, give NK‐EVs the potential to be a viable therapeutic platform. This study characterizes the size, EV‐specific protein expression, cell internalization, biocompatibility, and anti‐viral miRNA cargo to evaluate the anti‐viral properties of NK‐EVs. After 48 h of NK‐EV incubation in inflamed A549 lung epithelial cells, or conditions that mimic lung viral infections such as during COVID‐19, cells treated with NK‐EVs exhibit upregulated anti‐viral miRNA cargo (miR‐27a, miR‐27b, miR‐369‐3p, miR‐491‐5p) compared to the non‐treated controls and cells treated with control EVs derived from lung epithelial cells. Additionally, NK‐EVs effectively reduce expression of viral RNA and pro‐inflammatory cytokine (TNF‐α, IL‐8) levels in SARS‐CoV‐2 infected Vero E6 kidney epithelial cells and in infected mice without causing tissue damage while significantly decreasing pro‐inflammatory cytokine compared to non‐treated controls. Herein, this work elucidates the potential of NK‐EVs as safe, anti‐viral nanomaterials, offering a promising alternative to conventional NK cell and anti‐viral therapies.
Folate‐PEG‐PROTAC Micelles for Enhancing Tumor‐Specific Targeting Proteolysis In Vivo
Authors: Ma Junhui , Fang Lei , Sun Zhengjun , Li Meijing , Fan Ting , Xiang Guangya , Ma Xiang 
Published: April 2024

AbstractProteolysis targeting chimeras (PROTACs) technology is rapidly developed as a novel and selective medicinal strategy for the degradation of cellular proteins in cancer therapy. However, the applications of PROTACs as heterobifunctional molecules are largely limited by high molecular weight, low bioavailability, poor permeability, insufficient targeting, and low efficacy in vivo. Herein, self‐assembling micelles of FA‐PEG‐PROTAC are designed for cancer cell selective targeting and reductive‐response proteolysis in tumor‐bearing mice. FA‐PEG‐PROTAC is prepared by conjugating folic acid (FA)‐PEG with EGFR‐targeting PROTAC via a disulfide bond. The FA‐PEG‐PROTAC micelles, formed by self‐assembling, are demonstrated to significantly improve tumor targeting efficacy and exhibit excellent anti‐tumor efficacy in the mouse xenograft model compared to the traditional PROTACs. The strategy of applying self‐assembled FA‐PEG‐PROTAC micelles in tumor therapy can not only improve targeted proteolysis efficiency but also broaden applications in the development of PROTAC‐based drugs.
High pH Stability and Ultralong‐Lived Room Temperature Phosphorescence Carbon Dots in Aqueous Environment
Authors: Shi Shuhao , Liu Weifeng , Di Yujie , Xu Yike , Wu Tao , Huang Xiaobo , Wang Meiling , Liu Xuguang 
Published: April 2024

AbstractLong‐lived room temperature phosphorescence (RTP) materials have many potential applications in areas such as luminescent lighting, biological imaging, and information security owing to their unique optical properties. However, traditional RTP materials are challenged by the fact that their phosphorescence can be easily quenched by dissolved oxygen and solvent‐assisted relaxation, making it difficult for them to emit phosphorescence in aqueous solutions, particularly in extreme pH environments. In this study, a multicolor RTP carbon dot‐based composite material (u‐CDs) is developed with urea and 3‐aminophenylboronic acid as raw materials. This material exhibits ultra‐long phosphorescence emission lifetime and high pH stability by constructing a rigid hydrogen bond network structure in an aqueous environment. The u‐CDs have an optimal emission of 448 nm, a quantum yield of 21.6%, a phosphorescence lifetime of 2.35 s, and an afterglow time of more than 50 s. With such unique properties, u‐CDs have great potential for applications in anti‐counterfeiting, information encryption, and 3D printing.
Bio‐Engineering Yeast Cells Biolenses by Reshaping Intracellular Vacuoles
Authors: Pirone Daniele , D'Agostino Massimo , Lombini Matteo , Cortecchia Fausto , Diolaiti Emiliano , Mongelluzzo Giuseppe , Giugliano Giusy , Bianco Vittorio , Miccio Lisa , Memmolo Pasquale , Ferraro Pietro 
Published: April 2024

AbstractAn intriguing field of research has recently emerged in which biological cells can be demonstrated to behave as photonics devices, such as optical microlenses. This research highlights yeast cells as promising candidates for engineering biolenses with customizable focal properties. Typically serving as positive biolenses due to their quasi‐spherical shape and positive refractive index (RI) contrast, yeast cells can achieve a negative lensing effect by manipulating their intracellular content, without altering their overall morphology. In fact, it shows that exposure to hypotonic conditions induces the formation of a large, roundish vacuole with lower RI values with respect to the surrounding cytoplasm, thus altering the cell's optical properties. This behavior is investigated by using 3D RI tomograms obtained through a holo‐tomographic phase imaging flow cytometry system, demonstrating that the anisotropic nature of yeast cells results in focal properties dependent on their specific orientations in respect to the incident light. Furthermore, Zemax OpticStudio is utilized to perform comprehensive assessments for optical design analysis of the obtained cell biolenses. The methods described here and the related results represent a pioneering investigation of biological cells’ metamorphoses via intracellular content manipulation for biolens applications.
Cascade Structured Plasmonic Liquid Crystal Biosensor for the Rapid Detection of Harmful Bacteria Dispersed in Potable Water
Authors: Sforza Maria Laura , Petronella Francesca , De Biase Daniela , Zaccagnini Federica , Lim Seok‐In , Butt Usman Akhtar , d'Alessandro Antonio , Godman Nicholas P. , Evans Dean R. , McConney Michael , Jeong Kwang‐Un , De Sio Luciano 
Published: April 2024

AbstractPathogenic microorganisms contaminating potable water are a serious water quality concern because they have severe consequences for human and environmental health. Managing water contamination requires the availability of fast and highly sensitive point‐of‐use detection systems responsive to a wide concentration range. In the present work, this goal is achieved by realizing a cascade‐structured biosensor that exploits innovative stimuli‐responsive materials such as gold nanorods (AuNRs) and photosensitive nematic liquid crystals (NLCs). The cascade structure is fabricated by interfacing a glass substrate in a back‐to‐front arrangement, hosting an array of bioactivated AuNRs and an NLC cell. The AuNRs array integrates microfluidic channels, allowing direct water sampling and the analysis of reduced water volumes with high sensitivity. The biosensor combines in the same device two independent optical transducers: a bioactive AuNRs array (plasmonic biosensor), sensitive to refractive index alterations, and an NLC cell that detects the presence of pathogens by responding to light intensity variations. The plasmonic biosensor performs exceptionally well for very low concentrations of bacteria. In contrast, the NLC biosensor works for high‐concentration bacteria, thus providing a cascade‐like detection system able to detect bacteria in a wide concentration range from 10 to 109CFU mL−1.