Boundary effects play an important role in the study of hydrodynamic limits in the Boltzmann theory. We justify rigorously the validity of the hydrodynamic limit from the Boltzmann equation of soft potentials to the c...
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Boundary effects play an important role in the study of hydrodynamic limits in the Boltzmann theory. We justify rigorously the validity of the hydrodynamic limit from the Boltzmann equation of soft potentials to the compressible Euler equations by the Hilbert expansion with multi-scales. Specifically, the Boltzmann solutions are expanded into three parts: interior part, viscous boundary layer and Knudsen boundary layer. due to the weak effect of collision frequency of soft potentials, new difficulty arises when tackling the existence of Knudsen layer solutions with space decay rate, which has been overcome under some constraint conditions and losing velocity weight arguments. (c) 2024 Elsevier Inc. All rights are reserved, including those for text anddata mining, AI training, and similar technologies.
Background: Non-thyroidal illness syndrome (NTIS) is the most common endocrine dysfunction in critically ill patients and is often associated with poor prognosis. Thyroiddysfunction and immune cell disturbances are f...
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Background: Non-thyroidal illness syndrome (NTIS) is the most common endocrine dysfunction in critically ill patients and is often associated with poor prognosis. Thyroiddysfunction and immune cell disturbances are frequently observed in patients with severe fever with thrombocytopenia syndrome (SFTS). This study aims to evaluate the impact of NTIS on the prognosis of SFTS patients and to explore the relationship between thyroid hormones (THs) and immune cell profiles. Methods: Adult patients admitted to Yantai Qishan Hospital for SFTS from January 2023 to december 2023 with no prior history of thyroiddisease were retrospectively recruited. Multivariable regressions were used to assess the associations between NTIS and clinical outcomes. Spearman correlation analysis was conducted to evaluate the relationships between immune cells and THs. SFTS patients with NTIS were categorized into four subtypes based on different levels of FT4 and TSH, and the association between NTIS subtypes and mortality was further analyzed. results: Of the 84 SFTS patients included in the study, 62 (73.8%) were diagnosed with NTIS. Independent risk predictors which may affect prognosis of SFTS patients include NTIS subtype (P =0.002), viral load (P = 0.029), FT3 (P = 0.032), and FT4 (P = 0.041). SFTS patients with NTIS exhibited a higher mortality rate compared to euthyroid patients (P = 0.033). Spearman correlation analysis revealed that LYM, LYM%, MONO, MONO%, BAS, Cd3+T, Cd3+T%, Th, and Th% were positively correlated with FT3, FT4, or TSH levels. NTIS patients were more likely to present with coagulation abnormalities (APTT, P = 0.005;d-dimer, P < 0.001), liver enzyme abnormalities (AST, P = 0.001), electrolyte imbalances (Sodium, P = 0.003), elevated LdH (P = 0.001), and increased alpha-HBdH (P = 0.003). Conclusion: NTIS is common in SFTS patients, and SFTS patients with NTIS have a lower survival rate compared to euthyroid patients. The mortality risk in NTIS type 3 patients is highe
Poly (heptazine imide) (PHI), a classic 2d polymeric photocatalyst, represents a promising organic semiconductor for photocatalytic overall water splitting (POWS). However, since the key bottleneck in POWS of PHI rema...
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Poly (heptazine imide) (PHI), a classic 2d polymeric photocatalyst, represents a promising organic semiconductor for photocatalytic overall water splitting (POWS). However, since the key bottleneck in POWS of PHI remains unclear, its quantum efficiency of POWS is extremely restrained. To identify the key obstacle in POWS on the PHI, a series of PHI with different stacking modes is synthesized by tuning interlayer cations. The structural characterizations revealed that tuning the interlayer cations of PHI can induce rearrangements in interlayer stacking modes. Additionally, charge carriers dynamics uncover that optimizing the interlayer stacking modes of PHI can promote exciton diffusion and prolong the photoexcited electron lifetimes, thus improving the concentration of surface-reaching charge. More importantly, this confirms that the POWS activity of PHI is closely correlated with the interlayer stacking modes. This work offers new insight into structural regulation for governing charge-transport dynamics and the activity of 2d polymeric photocatalysts.
An efficient iridium-catalyzed asymmetric hydrogenation (AH) of tetrahydro-gamma-carboline has been developed for the synthesis of chiral cis-hexahydro-gamma-carboline derivatives. This method overcomes the challenge ...
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An efficient iridium-catalyzed asymmetric hydrogenation (AH) of tetrahydro-gamma-carboline has been developed for the synthesis of chiral cis-hexahydro-gamma-carboline derivatives. This method overcomes the challenge posed by C6 substituents on the carboline ring, proceeding smoothly under mild conditions to deliver the desired products in high yields with exceptional enantioselectivities. The success of this transformation is attributed to the use of a ZhaoPhos ligand bearing an electron-withdrawing F-substituted phenyl group on phosphorus. Notably, the strategy's versatility is furtherdemonstrated by its concise and efficient application in the synthesis of lumateperone intermediates.
Triple-negative breast cancer(TNBC)is defined by the lack of estrogen receptor(Er),progesterone receptor,and amplified human epidermal growth factorreceptor *** accounts for~15%of all breast cancer cases but represen...
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Triple-negative breast cancer(TNBC)is defined by the lack of estrogen receptor(Er),progesterone receptor,and amplified human epidermal growth factorreceptor *** accounts for~15%of all breast cancer cases but represents>50%of breast cancer(BC)-related mortalities.
Up to an estimated 10% of women experience miscarriage in their lifetimes. Embryonic aneuploidy is a leading cause for miscarriage, infertility and congenital defects. Here we identify variants of ELL3, a gene encodin...
Up to an estimated 10% of women experience miscarriage in their lifetimes. Embryonic aneuploidy is a leading cause for miscarriage, infertility and congenital defects. Here we identify variants of ELL3, a gene encoding a transcription elongation factor, in couples who experienced consecutive early miscarriages due to embryonic aneuploidy. Maternal ELL3 knockout leads to mouse oocyte aneuploidy, subfertility and miscellaneous embryonic defects. Mechanistically, we find that ELL3 localizes to the spindle during meiosis, and that ELL3 depletion in both mouse and human oocytes increases the incidence of meiotic spindle abnormality. ELL3 coordinates with TPX2 to ensure the proper function of the microtubule motor KIF11. Live imaging analysis shows that ELL3 is paramount for promoting spindle assembly anddriving chromosome movement. Together, our findings implicate maternal ELL3 deficiency in causing oocyte aneuploidy and early miscarriage.
Arterial stiffening is a hallmark of chronic kidney disease (CKd)-related cardiovascular events and is primarily attributed to the elevated matrix stiffness. Stiffened arteries are accompanied by low-grade inflammatio...
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Arterial stiffening is a hallmark of chronic kidney disease (CKd)-related cardiovascular events and is primarily attributed to the elevated matrix stiffness. Stiffened arteries are accompanied by low-grade inflammation, but the causal effects of matrix stiffness on inflammation remain unknown. For analysis of the relationship between arterial stiffness and vascular inflammation, pulse-wave velocity (PWV) and aortic inflammatory markers were analyzed in an adenine-induced mouse model of CKd in chronological order. Compared with their control littermates, mice with CKd showed elevated arterial stiffness at the early stage of disease progression, which preceded the onset of vascular inflammation. Correspondingly, the increase of matrix stiffness induced vascular smooth muscle cells (VSMCs) to transdifferentiate into an inflammatory phenotype, as indicated by the increased expression and secretion of MCP-1, IL-6, IL-1 beta, and IL-18. rNA-sequencing analysis of stiff matrix-cultured VSMCs and bioinformatics analysis with the ChIP-Atlas database revealed the potential involvement of the transcription factorrunx2. The expression and the nuclear localization of runx2 were significantly increased in stiff matrix-cultured VSMCs. High-throughput ChIP-sequencing and promoter luciferase assays furtherrevealed that NLrP3 was directly transcriptionally regulated by runx2. The inhibition of runx2 or NLrP3 inflammasome abrogated the proinflammatory effect of matrix stiffening on VSMCs. Together, these data revealed that arterial stiffness precedes vascular inflammatory responses in CKd mice and that the runx2-NLrP3 axis orchestrates matrix stiffness and the VSMC inflammatory phenotype, which may contribute to the pathogenic role in arterial stiffness-related vascular inflammation and CKd-related cardiovascular complications. NEW & NOTEWOrTHY As a hallmark of chronic kidney disease (CKd), arterial stiffening is related to increased vascular inflammation and cardiovascular morbidit
redundantly actuated parallel mechanisms (rAPMs) have been widely adopted in advancedrobotic systems and precision machine tools. It has been demonstrated that redundant actuation can improve the performance of mecha...
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redundantly actuated parallel mechanisms (rAPMs) have been widely adopted in advancedrobotic systems and precision machine tools. It has been demonstrated that redundant actuation can improve the performance of mechatronic systems but introduce challenges with respect to control. One main difficulty is in establishing an accurate dynamic model of the rAPM system. With an inaccurate dynamic model, the torque applied by the actuators will be incorrect, leading to increased antagonistic forces in the system. To solve this problem, a novel coordinated adaptive impedance control approach based on a new adaptive impedance control law is presented here, along with proof of the stability of the closed-loop system. The control algorithm has been validated experimentally by a prototype cable-driven parallel manipulator. It can be seen from the experimental results that the proposed control method is an effective way to correct the antagonistic forces of the system, thus facilitating the improvement of its dynamic performance and its efficacy in different applications.
The Early Paleozoic porphyry-epithermal Au system of the Songshunangou district sits in the central segment of the North Qilian orogenic belt (NQOB). The porphyry Au mineralization is centered on the quartz diorite po...
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The Early Paleozoic porphyry-epithermal Au system of the Songshunangou district sits in the central segment of the North Qilian orogenic belt (NQOB). The porphyry Au mineralization is centered on the quartz diorite porphyry (QdP), which is constrained to the Late Ordovician period. However, the geochemical signatures, the origin, and the tectonic setting of the QdP are not yet known and understood and are thus in the focus here. The QdP is a high-K calc-alkaline metaluminous rocks (K2O + Na2O: 6.90-8.13;Al2O3/(CaO + Na2O + K2O): 0.69-0.90) characterized by high (87Sr/86Sr)t values (0.709 3-0.710 1) and low epsilon Nd(t) values (-2.9 to -2.7) with corresponding TdM2 (Nd) ages of 1 408 to 1 430 Ma. Zircon epsilon Hf(t) values are low (-1.51 to +2.76) with corresponding TdM2 (Hf) ages of 1 262 to 1 533 Ma. The lead isotope values are 17.695-18.476 for (206Pb/204Pb)t, 15.585-15.629 for (207Pb/204Pb)t, and 37.214-37.948 for (208Pb/204Pb)t. These data indicate that the QdP formed by the mixing of mantle-derived magmas (50%-70%) with lower crustal melts. The QdP is enriched in LrEEs and LILE (rb, Th, K) and is depleted in HFSE (Nb, Ta, Ti), expressing a clear volcanic arc affinity. High La and Th contents, and Zr/Y and Hf/Yb values suggest that the QdP formed in an Andean-type continental margin arc setting related to the northward subduction of the North Qilian oceanic slab. The Early Paleozoic subduction-related intermediate-acidic intrusions in NQOB have arc magma affinity, indicating that these rocks bear a great potential to discover further fertile porphyry deposits.
Bubble detachment plays a crucial role in preventing excessive accumulation in gas-liquidreactors and improving the mass transfer efficiency. This study investigates the effect of surface hydrophobicity on bubble det...
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Bubble detachment plays a crucial role in preventing excessive accumulation in gas-liquidreactors and improving the mass transfer efficiency. This study investigates the effect of surface hydrophobicity on bubble detachment induced by coalescence through high-speeddynamic experiments and numerical simulations. The results show that on surfaces with low hydrophobicity (contact angles of 15 and 25 degrees), bubbles detach because the inner contact line contracts relatively slowly, allowing the outer contact line to coalescence quickly. In contrast, on highly hydrophobic surfaces (contact angles of 35 and 45 degrees), the simultaneous contraction of both the inner and outer contact lines prevents bubble jumping. Numerical simulations indicate that low-hydrophobicity surfaces generate sufficient kinetic energy through the pressure gradient. As hydrophobicity increases, some of the energy is dissipated through liquid-film drainage, weakening internal convection andreducing the intensity of the upward flow, which ultimately prevents bubble detachment. Energy analysis further indicates that bubble coalescence shows a weak dependence on the Bo number, while the magnitude of the adhesion energy is the key factordetermining bubble jumping. When the adhesion energy exceeds approximately 20% of the released surface energy, the coalesced bubble is unable to detach.
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