Prediction of Biocrude Yield in Hydrothermal Co-liquefaction of Different Biomass Feedstocks

Please click Additional Files below to see the full abstrac

A Comparative Study on the Performance of Fiber-Based Biosorbents in the Purification of Biodiesel Derived from Camelina sativa

Biodiesel has received great interest as a promising substitute for petrodiesel. Biodiesel purification which follows the transesterification process is typically carried out using a wet washing process that generates large amounts of wastewater. Consequently, alternative methods are emerging as sustainable options for biodiesel purification. One of such methods is a dry washing process. In this paper, the performance of three dry washing media (commercially available BD-Zorb, sawdust and wood shavings) were evaluated as potentially suitable options for the purification of biodiesel derived from Camelina sativa. The results indicate that for the crude camelina biodiesel with an initial soap content of 9007 ppm, BD-Zorb exhibited the best purification performance. The soap removal capacity of BD-Zorb, sawdust, and wood shavings was 51.1 mL/g, 24.4 mL/g, and 9.4 mL/g respectively. The primary mechanism of soap removal using sawdust and wood shavings media was physical filtration and adsorption. While for adsorbent BD-Zorb, soap removal mechanism included adsorption and ion exchange due to the existence of a small amount of resins. The ion exchange led to a high acid number (1 mg KOH/g) of the purified biodiesel, and failed to meet the ASTM D6751 specifications (<0.5 mg KOH/g)

Enantioseparation of Citalopram by RP-HPLC, Using Sulfobutyl Ether--Cyclodextrin as a Chiral Mobile Phase Additive

Enantiomeric separation of citalopram (CIT) was developed using a reversed phase HPLC (RP-HPLC) with sulfobutylether--cyclodextrin (SBE--CD) as a chiral mobile phase additive. The effects of the pH value of aqueous buffer, concentration of chiral additive, composition of mobile phase, and column temperature on the enantioseparation of CIT were investigated on the Hedera ODS-2 C 18 column (250 mm × 4.6 mm × 5.0 um). A satisfactory resolution was achieved at 25 ∘ C using a mobile phase consisting of a mixture of aqueous buffer (pH of 2.5, 5 mM sodium dihydrogen phosphate, and 12 mM SBE--CD), methanol, and acetonitrile with a volumetric ratio of 21 : 3 : 1 and flow rate of 1.0 mL/min. This analytical method was evaluated by examining the precision (lower than 3.0%), linearity (regression coefficients close to 1), limit of detection (0.070 g/mL for ( )-CIT and 0.076 g/mL for ( )-CIT), and limit of quantitation (0.235 g/mL for ( )-CIT and 0.254 g/mL for ( )-CIT)

Enantioseparation of Citalopram by RP-HPLC, Using Sulfobutyl Ether- β

Enantiomeric separation of citalopram (CIT) was developed using a reversed phase HPLC (RP-HPLC) with sulfobutylether-β-cyclodextrin (SBE-β-CD) as a chiral mobile phase additive. The effects of the pH value of aqueous buffer, concentration of chiral additive, composition of mobile phase, and column temperature on the enantioseparation of CIT were investigated on the Hedera ODS-2 C18 column (250 mm × 4.6 mm × 5.0 um). A satisfactory resolution was achieved at 25°C using a mobile phase consisting of a mixture of aqueous buffer (pH of 2.5, 5 mM sodium dihydrogen phosphate, and 12 mM SBE-β-CD), methanol, and acetonitrile with a volumetric ratio of 21 : 3 : 1 and flow rate of 1.0 mL/min. This analytical method was evaluated by examining the precision (lower than 3.0%), linearity (regression coefficients close to 1), limit of detection (0.070 µg/mL for (R)-CIT and 0.076 µg/mL for (S)-CIT), and limit of quantitation (0.235 µg/mL for (R)-CIT and 0.254 µg/mL for (S)-CIT)

Criminal Justice in the 21st Century: Allegheny County Jail

Criminal Justice in the 21st Century: Allegheny County Jail looks into the history, purposes, and structure of the Allegheny County Jail. This report outlines national and local data trends within jails and discusses the historic and current purposes of jails. It also highlights innovative programs and challenges within the county’s jail and potential best practices to address them

Criminal Justice in the 21st Century: Allegheny County Pretrial Decisions

Criminal Justice in the 21st Century: Allegheny County Pretrial Decisions examines the pretrial procedures and decisions made within the county criminal justice system. The report examines how pretrial decisions are made and national standards for pretrial services. The report highlights innovative practices occurring within the county and key local data. It also outlines national best practices in pretrial decisions

Criminal Justice in the 21st Century: Allegheny County Prosecution and Defense

Criminal Justice in the 21st Century: Allegheny County Prosecution and Defense examines the roles of prosecution and defense nationally and within the county including the offices of the district attorney and public defender. The report looks at key local data and opportunities within criminal court procedures to reduce the county jail population and the number of people under correctional control. The report highlights innovation national best practices in the area of prosecution and defense

Criminal Justice in the 21st Century: Allegheny County Courts and Probation

Criminal Justice in the 21st Century: Allegheny County Courts and Probation examines the structure, responsibilities, successes, and opportunities within Allegheny County's courts and probation department. The report highlights initiatives and innovations implemented by the Fifth Judicial District’s Criminal Division and key local data indicators. It also identifies current challenges within the county’s court and probation system and potential national best practices to address these challenges

Criminal Justice in the 21st Century: Allegheny County Law Enforcement

Criminal Justice in the 21st Century: Allegheny County Law Enforcement examines the role of the police both nationally and in Allegheny County. The report identifies local law enforcement agencies and their role within the county criminal justice system. This report also highlights key local data trends and discusses the impact of law enforcement on the criminal justice system. It also highlights national best practices in policing

Interferon-γ couples CD8+ T cell avidity and differentiation during infection

Effective responses to intracellular pathogens are characterized by T cell clones with a broad affinity range for their cognate peptide and diverse functional phenotypes. How T cell clones are selected throughout the response to retain a breadth of avidities remains unclear. Here, we demonstrate that direct sensing of the cytokine IFN-γ by CD8+ T cells coordinates avidity and differentiation during infection. IFN-γ promotes the expansion of low-avidity T cells, allowing them to overcome the selective advantage of high-avidity T cells, whilst reinforcing high-avidity T cell entry into the memory pool, thus reducing the average avidity of the primary response and increasing that of the memory response. IFN-γ in this context is mainly provided by virtual memory T cells, an antigen-inexperienced subset with memory features. Overall, we propose that IFN-γ and virtual memory T cells fulfil a critical immunoregulatory role by enabling the coordination of T cell avidity and fate