Publications by authors named "Cheng Mao"

Diversifying the connecting junctions will be feasible for the controllable collaboration of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) to rationally design multifunction-integrated heterostructures with enhanced performance, yet it is in the nascent stage. Herein, by intelligently exploiting the polymerization of vinyl group, C-C bond is innovatively introduced to construct the core-shell MOF@COF heterostructures with adjustable shell thickness and rare interpenetrated structure. The unique structure endows prepared C-C-linked MIL-68@COF-Vs with more superior visible-light harvesting and photogenerated carrier separation capability, leading to significantly higher photocatalytic activity and faster degradation rate than pristine MIL-68-C=Cs, COF-V, and imine-linked MIL-68-NH@COF-V.

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To solve the shortage of austenite phase precipitation caused by nitrogen loss in the welding process of UNS S2205 duplex stainless steel (DSS), shielding gas nitriding was investigated by adding different N contents in Ar shielding gas during the welding process. A good thin-walled pipe butt joint was formed using the pulsed tungsten inert gas (P-TIG) welding method with Ar-N shielding gas. High cycle fatigue tests of the weld joints were conducted to study the effect of shielding gas nitriding on the fatigue properties.

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Article Synopsis
  • The study aimed to investigate the link between substantia nigra (SN) hyperechogenicity and serum iron metabolism in patients with postural instability gait difficulty (PIGD) subtype of Parkinson's disease.
  • It involved 95 PIGD patients divided into two groups based on SN hyperechogenicity and compared them with a control group of healthy individuals through blood tests for iron metabolism parameters.
  • Results showed that serum ferritin, ceruloplasmin, and transferrin levels were lower in the PIGD groups than controls, with reduced ceruloplasmin levels linked to SN hyperechogenicity, suggesting a potential mechanism behind this condition.
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Single-photon avalanche diodes (SPADs) are novel image sensors that record photons at extremely high sensitivity. To reduce both the required sensor area for readout circuits and the data throughput for SPAD array, in this paper, we propose a snapshot compressive sensing single-photon avalanche diode (CS-SPAD) sensor which can realize on-chip snapshot-type spatial compressive imaging in a compact form. Taking advantage of the digital counting nature of SPAD sensing, we propose to design the circuit connection between the sensing unit and the readout electronics for compressive sensing.

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Our study focused on three aspects to determine whether bilateral substantia nigra hyperechogenicity (SN+) is asymmetrical, whether the asymmetry of SN+ is related to the clinical features and whether there is variation in SN+ asymmetry during the progression of Parkinson disease (PD). This follow-up study included 234 patients with PD, who were divided into tremor PD (TD, n = 67) and non-tremor PD (NTD, n = 167) groups based on the Unified Parkinson's Disease Rating Scale (UPDRS) Part III. All participants underwent transcranial sonography (TCS) and clinical assessment.

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Article Synopsis
  • - This study investigated how homocysteine (Hcy) levels relate to changes in brain structures, specifically the third ventricle (V3) and mesencephalic area (MA), in Parkinson's disease (PD) patients with cognitive impairment.
  • - It included 101 PD patients and 20 controls, finding significant correlations between higher Hcy levels and wider V3 and more atrophy in MA, especially in those with cognitive issues.
  • - The analysis indicated that higher Hcy levels were linked to a greater risk of both V3 dilatation and MA atrophy in PD patients, suggesting that elevated Hcy may contribute to brain degeneration in those with cognitive impairment.
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Background: Rigidity is one of the major manifestations of Parkinson's disease (PD), but no quantitative and objective imaging method has been developed to measure rigidity. Ultrasound shear wave elastography (SWE) can reflect the stiffness of tissue by providing a quantitative index. Thus, we conducted this study to evaluate the potential clinical value of SWE in assessing rigidity in PD.

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Purpose: Wider breast cancer (BC) treatment options, short consultation time with physicians, lack of knowledge, and poor coping skills at the time of diagnosis may affect patients' decisions causing treatment delays and non-adherence. To address this gap, a breast care nurse video orientation program was started. Our aim was to evaluate the video on patients' knowledge, satisfaction, and treatment adherence.

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A smart floating gate transistor with two control gates was proposed for active noise control in bioelectrical signal measurement. The device, which is low cost and capable of large-scale integration, was implemented in a standard single-poly complementary metal-oxide-semiconductor (CMOS) process. A model of the device was developed to demonstrate the working principle.

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Objective: Abnormal expression of ABCA1 and ABCG1 in the placenta can elicit lipid metabolism disorder and adverse pregnancy outcomes. However, whether it is associated with preterm delivery remains unclear. Our present study aimed to evaluate the relationship between abnormal expression of ABCA1 or ABCG1 and preterm delivery.

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Emphysematous pyelonephritis is a rare life-threatening condition caused by a severe acute necrotising infection of the renal parenchyma and its perinephric tissues, and it is commonly seen in diabetic patients. There is a rare association between emphysematous pyelonephritis and hepatic portal venous gas. Hepatic portal venous gas is an uncommon radiological finding, which implies a significant underlying abdominal disease.

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The purpose of our study was to assess the alteration of the brainstem raphe (BR) on transcranial sonography (TCS) in depression patients with or without Parkinson's disease (PD) and to explore whether the different changes of BR could reflect an increasing impairment of raphe structures. TCS was performed in patients with PD, depression with PD, depression only, and controls. Using the red nucleus as an internal standard, the BR was rated semi-quantitatively from grades 1-4 with grades 1-3 determined as abnormal.

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Estrogen receptor (ER)-α is an important therapeutic target in the clinical treatment of breast cancer. A potential down-regulator of ER-α, diosgenyl α-L-rhamnopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→4)]-α-L-arabinopyranoside is a newly synthesized diosgenyl saponin named compound 22. This study evaluated the in vitro mechanism of compound 22 as an anticancer agent for breast cancer.

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The effects of small-molecule p38 inhibitors in numerous models of different disease states have been published, including those of SD-282, an indole-5-carboxamide inhibitor. The aim of the present study was to evaluate the pharmacological activity of SD-282 on cytokine production in vitro as well as in 2 in vivo models of inflammation in order to illuminate the role of this particular inhibitor in diverse disease states. The results presented here provide further characterization of SD-282 and provide a context in which to interpret the activity of this p38 inhibitor in models of arthritis, pain, myocardial injury, sepsis and asthma; all of which have an inflammatory component.

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Objectives: To describe the epidemiology and outcomes of serious pediatric submersion injuries and to identify factors associated with an increased risk of death or chronic disability.

Methods: A retrospective database review of 1994-2000 Massachusetts death and hospital discharge data characterized demographic factors; International Classification of Diseases, Ninth Revision (ICD-9), Clinical Modification (ICD-9-CM), or ICD-10 injury codes; and outcomes for state residents 0-19 years of age identified with unintentional submersion injuries. The authors performed logistic regression analysis to correlate outcomes with risk and demographic factors.

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Methyl protodioscin (1), otherwise known as 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-d-glucopyranosyl]-26-O-[beta-D-glucopyranosyl]-22-methoxy-25(R)-furost-5-ene-3 beta,26-diol, has been synthesized for the first time from diosgenin through nine steps in an overall yield of 7.8%.

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