Kinetic investigation on the catalytic pyrolysis of plastic fractions of waste electrical and electronic equipment (WEEE): A mathematical deconvolution approach.

Waste electrical and electronic equipment (WEEE) has become a critical environmental problem. Catalytic pyrolysis is an ideal technique to treat and convert the plastic fraction of WEEE into chemicals and fuels. Unfortunately, research using real WEEE remains relatively limited.

Van Krevelen diagrams based on machine learning visualize feedstock-product relationships in thermal conversion processes.

Feedstock properties play a crucial role in thermal conversion processes, where understanding the influence of these properties on treatment performance is essential for optimizing both feedstock selection and the overall process. In this study, a series of van Krevelen diagrams were generated to illustrate the impact of H/C and O/C ratios of feedstock on the products obtained from six commonly used thermal conversion techniques: torrefaction, hydrothermal carbonization, hydrothermal liquefaction, hydrothermal gasification, pyrolysis, and gasification. Machine learning methods were employed, utilizing data, methods, and results from corresponding studies in this field.

Plunging Ranula Presenting as a Giant Anterior Cervical Cystic Mass: A Case Report and Literature Review.

Plunging ranula, a subtype of ranula, commonly presents as a submandibular or submental cystic mass without oral counterpart, and its clinical management remains challenging. Herein, the authors report an extremely rare case of 30-year-old female patient with plunging ranula involving the root of the left anterior neck.

Palladium Catalyzed Allylic C-H Oxidation Enabled by Bicyclic Sulfoxide Ligands.

The activation of C-H bonds is a potent tool for modifying molecular structures in chemistry. This article details the steps involved in a novel ligand bearing a bicyclic [3.3.

An antibacterial hemostatic AuNPs@corn stalk/chitin composite sponge with shape recovery for promoting wound healing.

The development of shape-memory sponge dressings with functions, such as hemostasis, antibacterial activity, and wound healing, is of great significance in clinical applications. Herein, a novel AuNPs@corn stalk/chitin composite sponge (CCAu) was fabricated by crosslinking the chitin matrix with corn stalk-embedded gold nanoparticles (AuNPs). The addition of AuNPs@corn stalk gave the porous chitin sponge shape-recovery ability with improved softness, porosity, and water absorption.

Pyrolysis of engineered beach-cast seaweed: Performances and life cycle assessment.

The blooming of beach-cast seaweed has caused environmental degradation in some coastal regions. Therefore, a proper treating and utilizing method of beach-cast seaweed is demanded. This study investigated the potential of producing power or biofuel from pyrolysis of beach-cast seaweed and the effect of the ash-washing process.

Magnetic bio-activated carbons production using different process parameters for phosphorus removal from artificially prepared phosphorus-rich and domestic wastewater.

A series of magnetic bio-activated carbon (MBAC) has been produced from lignin and ferrous salts following to the process including impregnation, carbonization, and steam activation. The influence of the impregnation methods and the steam flow rate on the quality and the maximum phosphorus adsorption capacity of the produced MBACs has been investigated. The phosphorus adsorption performance in real domestic wastewater of the MBAC with the highest maximum phosphorus adsorption capacity has been investigated.

RNAi targeting CXCR4 inhibits tumor growth through inducing cell cycle arrest and apoptosis.

CXC chemokine receptor 4 (CXCR4) is involved in many human malignant tumors and plays an important role in tumor growth and metastasis. To explore the effects of CXCR4 expression on the malignant cells of oral squamous cell carcinoma (OSCC), Tca8113 and SCC-9 cell lines, as well as their xenograft models, of nude mice were used to detect cancer cell proliferation alteration. This study also examined the corresponding molecular mechanism after CXCR4 knockdown using a recombinant lentiviral vector expressing small interference RNA (siRNA) for CXCR4.

Progressively bilateral resorption of the mandible.

We describe a case of arrested spontaneous mandibular resorption for which there was no effective treatment. A 32-year-old male patient presented to our department with mandibular resorption so severe that the residual mandibular body bone resembled chopsticks. A provisional diagnosis of Gorham-Stout Syndrome (GSS) was made.

[Lymphatic targeting study of pingyangmycin-activated carbon nanoparticles treating oral cancer lymph node metastasis].

Objective: To investigate the drug distribution in tissues of cervical lymph node metastasis mice model after submucosa adjacent cancer injection of pingyangmycin-activated carbon nanoparticles (PYM-CH-NP) and evaluate the lymph targeting effect of PYM-CH-NP.

Methods: Pingyangmycin (PYM) was radiolabeled with 125I by modified the chloramine T method. Cervical lymph node metastasis mice model was established by buccal submucosa inoculation of a high lymph metastasis cell line U14 cancer cell.

CXCR4 promotes oral squamous cell carcinoma migration and invasion through inducing expression of MMP-9 and MMP-13 via the ERK signaling pathway.

The increased migration and invasion of oral squamous cell carcinoma cells are key events in the development of metastasis to the lymph nodes and distant organs. Although the chemokine receptor CXCR4 and its ligand, stromal cell-derived factor-1α, have been found to play an important role in tumor invasion, its precise role and potential underlying mechanisms remain largely unknown. In this study, we showed that knockdown of CXCR4 significantly decreased Tca8113 cells migration and invasion, accompanied with the reduction of MMP-9 and MMP-13 expression.

Land cover change of watersheds in Southern Guam from 1973 to 2001.

Land cover change can be caused by human-induced activities and natural forces. Land cover change in watershed level has been a main concern for a long time in the world since watersheds play an important role in our life and environment. This paper is focused on how to apply Landsat Multi-Spectral Scanner (MSS) satellite image of 1973 and Landsat Thematic Mapper (TM) satellite image of 2001 to determine the land cover changes of coastal watersheds from 1973 to 2001.

Management of sternal osteomyelitis and mediastinal infection following median sternotomy.

Background: Median sternotomy is considered the most usually performed procedure in cardiac operations. This study aimed to assess clinical effectiveness of bilateral pectoralis major muscle flaps (BPMMF) for management of sternal osteomyelitis and mediastinal infection following median sternotomy.

Methods: Clinical data were collected and retrospectively analyzed from twelve patients who underwent the BPMMF transposition for management of sternal osteomyelitis and mediastinal infection following median sternotomy from January 2006 to June 2009.

Derived vascular endothelial cells induced by mucoepidermoid carcinoma cells: 3-dimensional collagen matrix model.

Mucoepidermoid carcinoma undergoes uniquely vigorous angiogenic and neovascularization processes, possibly due to proliferation of vascular endothelial cells (ECs) induced by mucoepidermoid carcinoma cells (MCCs) in their three-dimensional (3D) microenvironment. To date, no studies have dealt with tumor cells and vascular ECs from the same origin of mucoepidermoid carcinoma using the in vitro 3D microenvironment model. In this context, the current research aims to observe neovascularization with mucoepidermoid carcinoma microvascular ECs (MCMECs) conditioned by the microenvironment in the 3D collagen matrix model.

[Anticancer effects of Pingyangmycin-activated carbon nanoparticles against human oral squamous carcinoma Tca8113 and BcaCD885 cell lines in vitro].

Objective: The cytotoxic effects of a new formulation of Pingyangmycin-activated carbon nanoparticles (PYM-CH-NP) on two human oral squamous cell carcinoma Tca8113 and BcaCD885 cell lines were studied in vitro.

Methods: The inhibitory effects of PYM-CH-NP and Pingyangmycin (PYM) were evaluated by methyl thiazolyl tetrazolium (MTT) assay at 1-7 days. The 50% inhibition concentration values (IC50) and relative antitumor activity (RAA) of PYM-CH-NP and PYM against Tca8113 and BcaCD885 with different drug concentration were evaluated.

[Embolization and degradation of arteries in vivo by pingyangmycin albumin microspheres].

Objective: To investigate the embolization effect of Pingyangmycin-albumin microspheres (PYM-AMS) on small arteries and its process of degradation in vivo.

Methods: Twenty four Japanese white rabbits were randomly divided into four groups, 6 in each group. PYM hydrochloride + 0.

The expression profile of microRNAs in a model of 7,12-dimethyl-benz[a]anthrance-induced oral carcinogenesis in Syrian hamster.

Background: Non-coding RNA molecules, such as microRNAs, may play an important role in carcinogenesis. Recent studies have indicated that microRNAs are involved in initiation and progression of various malignancies. However, little work has been done to compare the microRNA expression patterns in oral cancer.

[Intralesional Pingyangmycin therapy for 51 infantile patients with parotid gland hemangiomas].

Purpose: To investigate the indication and outcome of intralesional Pingyangmycin (PYM) therapy for parotid gland hemangiomas in early childhood.

Methods: 51 infantile patients with hemangiomas in the parotid gland were studied retrospectively, which had been treated in the clinic of West China Hospital of Stomatology, Sichuan University during the 15-year period from May 1990 to May 2005. In this study, 21 were male, 30 were female, and the ratio of male to female was 1:1.

Metastatic tumors to the oral and maxillofacial region: a retrospective study of 19 cases in West China and review of the Chinese and English literature.

Purpose: The aim of this article was to obtain an overview of metastatic tumors to the oral and maxillofacial (OMF) region, especially the differences in the constituent ratios of primary cancers between the United States and China.

Patients And Methods: Clinical findings of 19 cases encountered in West China Hospital of Stomatology were summarized and the English and Chinese literature were reviewed and analyzed. The main clinical features of OMF metastases were summarized, with an emphasis on primary cancers' constituents.

Correlation between the expression of thrombospondin-1 and neovascularization in mucoepidermoid carcinoma.

Background: Researchers have recently demonstrated that thrombospondin-1 (TSP-1) has an important function in regulating neovascularization. Whether it inhibits or accelerates neovascularization, however, is still controversial. We found few reports about the correlation between TSP-1 and vascularization in mucoepidermoid carcinoma.

Management of the pediatric plunging ranula: results of 15 years' clinical experience.

Objective: This study was designed to evaluate the diagnosis and surgical treatment of the plunging ranula in children.

Study Design: A retrospective study of 129 pediatric patients with a clinical diagnosis of plunging ranula was conducted. All children underwent clinical assessment and fine needle aspiration cytology.

[Correlation between the expression of thrombospondin-1 and the angiogenesis in mucoepidermoid carcinoma].

Objective: To study the relationship between the expression of thrombospondin-1 (TSP-1) and the angiogenesis in mucoepidermoid carcinoma.

Methods: Immunohistochemistry were applied to detect the expression of TSP-1 and the value of microvessel density (MVD) in 45 mucoepidermoid carcinoma patients.

Results: Positive expressions of TSP-1 protein were detected in 26 of the 45 (57.

[Study of increased sensitivity on Tca8113 cell line to cisplatin by nm23-H1 in vitro].

Objective: To study the mechanism of sensitivity variation to cisplatin caused by nm23-H1.

Methods: The samles was divided into two groups: Tca8113 group and Tca8113/nm23-H1 group. Using MTT and flow cytometer, the changes of cell mortality rate, apoptosis and mitochondrial membrane potential were detected.