Biochar is widely recognized as an effective amendment for soils contaminated with cadmium (Cd). However, the properties and elemental compositions of biochar derived from different feedstocks may significantly impact the transfer of Cd in the soil-rice system. This study conducted a two-year field trial in Cd-contaminated paddy soil.
View Article and Find Full Text PDFIron (Fe) modified biochar has been widely used for cadmium (Cd) contaminated soil remediation. However, the accompanying anions introduced during the modification process potentially affect the behavior of Cd in soil. In this study, we investigated the distinct Cd immobilization mechanisms by Fe(SO) modified biochar (FSBC) and Fe(NO) modified biochar (FNBC) in a two-year pot experiment.
View Article and Find Full Text PDFHypopharyngeal carcinoma is one of the malignant tumors of the head and neck with a particularly poor prognosis. Recurrence and metastasis are important reasons for poor prognosis of hypopharyngeal cancer patients, and malignant proliferation, migration, and invasion of tumor cells are important factors for recurrence and metastasis of hypopharyngeal cancer. Therefore, elucidating hypopharyngeal cancer cells' proliferation, migration, and invasion mechanism is essential for improving diagnosis, treatment, and prognosis.
View Article and Find Full Text PDFJ Environ Manage
September 2024
Severe global climate change has resulted in the focus of social attention shifting to the manufacturing industry's low-carbon transformation. Digital intelligent transformation (DIT) in enterprises is identified as a crucial driver in mitigating carbon emissions. An estimation of DIT's impact on manufacturing industries' carbon emission intensity (CEI) and its underlying mechanisms was conducted using data from Chinese A-share listed companies.
View Article and Find Full Text PDFPeanut yield and quality face significant threats due to climate change and soil degradation. The potential of biochar technology to address this challenge remains unanswered, though biochar is acknowledged for its capacity to enhance the soil microbial community and plant nitrogen (N) supply. A field study was conducted in 2021 on oil peanuts grown in a sand-loamy Primisol that received organic amendments at 20 Mg ha.
View Article and Find Full Text PDFRecent years have witnessed growing public concern over air pollution in China, posing a challenge to the government's environmental management efforts. Empirical evidence indicates that the digital economy contributes to mitigating environmental pollution. Given that national audits are a crucial part of the national oversight system and considering the significant role of digital technology in audit governance, it is relevant to explore how the digital economy can support national audits in enhancing China's environmental quality.
View Article and Find Full Text PDFUltramicroporous metal-organic frameworks (MOFs) are demonstrated to be advantageous for the separation and purification of light hydrocarbons such as CH, CH, and CH. The introduction of transition metal sites with strong π-complexation affinity into MOFs is more effective than other adsorption sites for the selective adsorption of π-electron-rich unsaturated hydrocarbon gases from their mixtures. However, lower coordination numbers make it challenging to produce robust MOFs directly utilizing metal ions with π-coordination activity, such as Cu, Ag, and Pd.
View Article and Find Full Text PDFHead and neck squamous cell carcinoma (HNSCC) is a highly aggressive, heterogeneous tumour usually caused by alcohol and tobacco consumption, making it one of the most common malignancies worldwide. Despite the fact that various therapeutic approaches such as surgery, radiation therapy (RT), chemotherapy (CT) and targeted therapy have been widely used for HNSCC in recent years, its recurrence rate and mortality rate remain high. RT is the standard treatment choice for HNSCC, which induces reactive oxygen species production and causes oxidative stress, ultimately leading to tumour cell death.
View Article and Find Full Text PDFBiochar and modified biochar have gained wide attention for Cd-contaminated soil remediation. This study investigates the effects of rape straw biochar (RSB), sulfur-iron modified biochar (S-FeBC), and nitrogen-iron modified biochar (N-FeBC) on soil Fe oxide transformation and Cd immobilization. The mediated electrochemical analysis results showed that Fe modification effectively enhanced the electron exchange capacity (EEC) of biochar.
View Article and Find Full Text PDFAiming at the shortcomings of most existing control strategies for lower limb rehabilitation robots that are difficult to guarantee trajectory tracking effect and active participation of the patient, this paper proposes a force/position-based velocity control (FPVC) strategy for the hybrid end-effector lower limb rehabilitation robot (HE-LRR) during active training. The configuration of HE-LRR is described and the inverse Jacobian analysis is carried out. Then, the FPVC strategy design is introduced in detail, including normal velocity planning and tangential velocity planning.
View Article and Find Full Text PDFChem Commun (Camb)
February 2024
A novel method has been developed for the synthesis of 1-methyl-4,5-diaryl-1-imidazoles through Fe(II)-catalyzed cyclization of 2-azirines and ,-dimethylformamide (DMF) as an amine source. This transformation involves the cleavage of C-N and CN double bonds and the construction of new C-N and CN double bonds. The reaction has readily available starting materials, a wide range of substrates and mild reaction conditions.
View Article and Find Full Text PDFBackground: Spindle cell tumors are rare and can occur in any organ or tissue. Due to their rarity the clinicopathological features and diagnostic protocols have not been adequately studied. However, it has become necessary to develop differential diagnosis of spindle cell tumors.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
December 2023
J Environ Sci (China)
February 2024
Soil redox potential (Eh) plays an important role in the biogeochemical cycling of soil nutrients. Whereas its effect soil process and nutrients' availability under elevated atmospheric CO concentration and warming has seldom been investigated. Thus, in this study, a field experiment was used to elucidate the effect of elevated CO concentration and warming on soil Eh, redox-sensitive elements and root radial oxygen loss (ROL).
View Article and Find Full Text PDFJ Int Med Res
September 2023
Low-grade myofibroblastic sarcoma (LGMS) is a rare malignant mesenchymal tumor derived from myofibroblasts. It is commonly identified in the head and neck, and particularly in the oral cavity, but rarely in the larynx. In this case report, we describe a patient who presented with hoarseness and underwent electronic fiber laryngoscopy, which revealed a neoplasm on the surface of his left vocal cord.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
September 2023
For high-quality development, inclusive green growth (IGG) is a crucial strategic option. Given the deceleration in economic growth, monetary policy has several obligations, including stabilizing growth, changing structure, and mitigating risks. However, frequent revisions of monetary policy may diminish its regulatory efficacy due to resulting uncertainty.
View Article and Find Full Text PDFCd is normally associated with sulfide and Fe oxides in flooded paddy soil. The mechanisms of biochar enhanced Cd immobilization by promoting Fe transformation and sulfide formation are unclear. Rape straw biochar (RSB) pyrolyzed at 450 °C (LB) and 800 °C (HB) was added to Cd-contaminated paddy soil at 1% (LB1, HB1) and 2% (LB2, HB2) doses.
View Article and Find Full Text PDFHamartomas are benign tumors characterized by an abnormal combination and arrangement of normal tissues during development. It is more common in lung, gastrointestinal tract and other parts, rare in the head and neck, such as oral cavity, nasal cavity, nasopharynx, etc. This case report describes a patient with nasopharyngeal hamartoma who presented with headache and rhinorrhea and was confirmed to have smooth nasopharyngeal neoplasm by electronic fibro laryngoscopy.
View Article and Find Full Text PDFPig manure could be an effective fertilizer source for soil, but with high concentrations of xic elements. It has been shown that the pyrolysis method could largely reduce the environmental risk of pig manure. However, the comprehensive analysis of both toxic metals immobilization effect and environmental risk of pig manure biochar applied as a soil amendment is rarely addressed.
View Article and Find Full Text PDFProjected global climate change is a potential threat to nutrient utilization in agroecosystems. However, the combined effects of elevated [CO] and canopy warming on plant nutrient concentrations and translocations are not well understood. Here we conducted an open-air field experiment to investigate the impact of factorial elevated [CO] (up to 500 μmol mol) and canopy air warming (+2°C) on nutrient (N, P, and K) status during the wheat growing season in a winter wheat field.
View Article and Find Full Text PDFThe role of biochar-microbe interaction in plant rhizosphere mediating soil-borne disease suppression has been poorly understood for plant health in field conditions. Chinese ginseng ( C. A.
View Article and Find Full Text PDFAmyloidosis is a disease caused by amyloid deposition in tissues or organs. According to the extent of the lesion, it can be divided into systemic amyloidosis and localized amyloidosis. Amyloidosis originating in the larynx accounts for approximately 0.
View Article and Find Full Text PDFTo further investigate the effect of pyrolysis temperature on bioavailable Cd, Pb and As, as well as the bacterial community structure in multi-metal(loid) contaminated paddy soil, six types of biochar derived from wood sawdust and peanut shell at 300 °C, 500 °C and 700 °C were prepared and incubated with Cd, Pb and As contaminated paddy soil for 45 days. The results showed that adding biochar decreased bioavailable Cd by 31.3%- 42.
View Article and Find Full Text PDFAngiomyolipoma is an extremely rare, benign mesenchymal tumor of the nasal cavity, primarily common in the kidney and secondarily common in the liver. According to the author's knowledge, no cases of angiomyolipoma of the nasal septum have been identified to date. We report a case of a patient with a giant angiomyolipoma at the posterior end of the nasal septum who recovered after surgery without any complication.
View Article and Find Full Text PDF