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Zeppelin LZ 85
The LZ 85 was a World War I R-Class zeppelin of the German Navy with a total length of 198 metres (649 ft 7 in), allocated the tactical numbering L 45. LZ 85 carried out a total of 27 flights including 3 raids on England and 12 reconnaissance missions. LZ 85(LZ55) was also the numbering of the German zeppelin downed in Thessaloniki on 5th May 1916 by the British Navy HMS Agamemnon.
  • 512
  • 22 Nov 2022
Topic Review
Zephaniah Kingsley
Zephaniah Kingsley Jr. (December 4, 1765 – September 14, 1843), a Quaker born in England who moved as a child with his family to South Carolina, became a planter, slave trader, and merchant who built several plantations in the Spanish colony of Florida in what is now Jacksonville, Florida. He served on the Florida Territorial Council after Florida was acquired by the United States in 1821. Kingsley Plantation, which he owned and where he lived for 25 years, has been preserved as part of the Timucuan Ecological and Historic Preserve, run by the United States National Park Service. Kingsley was a relatively lenient slaveholder, who allowed his slaves the opportunity to be hired out and earn their freedom. He took four enslaved African women as common-law wives, practicing polygamy. His first wife, Anna Madgigine Jai Kingsley, was 13 years old when Kingsley purchased her in Havana. He said that he had married her, which he never said of his three other common-law wives. He emancipated Anna Jai when she turned 18, and trusted her with running his plantation when he was away on business. He had a total of nine mixed-race children with his wives. He educated his children to high standards and worked to ensure he could settle his estate on them and his wives. His interracial family and his business interests resulted in Kingsley being deeply invested in the Spanish system of slavery and society. As in the French colonies, certain rights were provided to a class of free people of color, and multiracial natural children were allowed to inherit property from white fathers. "In the Spanish Floridas free people of color ... enjoyed tremendously elevated status when compared to virtually any other person of African descent in North America.":61 Kingsley became involved in politics when control of the Florida colony passed in 1821 from Spain to the United States. He tried to persuade the new territorial government to maintain the special status of the population of free people of color, who were mostly multi-racial. He was unsuccessful in this effort, and in 1828 he published a pamphlet that defended a system of slavery that would allow slaves to purchase their freedom, and give rights to free blacks and free people of color. Faced with American laws that forbade interracial marriage, and discouraged "free people of color" (see Free black#Free negroes unwelcome) being allowed to stay or settle in the state, between 1835 and 1837, Kingsley relocated his large family to Haiti. (At that time it controlled part of what is today the Dominican Republic.) After his death, his estate in Florida was the subject of dispute between his widow Anna Jai and other members of Kingsley's family, but she was successful in gaining the estate he had bequeathed to her.
  • 830
  • 11 Oct 2022
Topic Review
Zeolitic Imidazolate Frameworks for CO2 Capture
The requirement to counter carbon emissions is becoming urgent. Zeolitic Imidazolate Frameworks (ZIFs) have been extensively investigated for storing and separating gases, especially carbon dioxide. ZIFs are the subclass of metal-organic frameworks with analogous topology to inorganic porous zeolites. These are attractive candidates for several applications, including storage and separation of gases, due to their outstanding properties such as high CO2 uptake, large surface area, permanent porosity, high thermal stability, high chemical stability, etc.
  • 649
  • 13 Jan 2023
Topic Review
Zeolitic Imidazolate Framework
Zeolitic imidazolate frameworks (ZIFs) are a class of metal-organic frameworks that are topologically isomorphic with zeolites. ZIFs are composed of tetrahedrally-coordinated transition metal ions (e.g. Fe, Co, Cu, Zn) connected by imidazolate linkers. Since the metal-imidazole-metal angle is similar to the 145° Si-O-Si angle in zeolites, ZIFs have zeolite-like topologies. As of 2010, 105 ZIF topologies have been reported in the literature. Due to their robust porosity, resistance to thermal changes, and chemical stability, ZIF’s are being investigated for applications such as carbon capture.
  • 1.4K
  • 25 Oct 2022
Topic Review
Zeolites as Catalyst Supports for Hydrocarbon Oxidation Reactions
Catalytic oxidation is a key technology for the conversion of petroleum-based feedstocks into useful chemicals (e.g., adipic acid, caprolactam, glycols, acrylates, and vinyl acetate) since this chemical transformation is always involved in synthesis processes. Zeolites are microporous, crystalline aluminosilicate materials known since 1756 when the stilbite structure was identified by the Swedish mineralogist Crönstedt. Zeolites and other related porous materials can be supports for organometallic or metallic active species. These materials are the most studied supports due to their combined properties of mechanical and thermal stability that allows it an easy regeneration and recycling. 
  • 807
  • 25 Mar 2022
Topic Review
Zeolites as Carriers of Nano-Fertilizers
The world is facing immense challenges in terms of food security, due to the combined impacts of the ever-increasing population and the adversity of climate change. In an attempt to counteract these factors, smart nutrient delivery systems, including nano-fertilizers, additives, and material coatings, have been introduced to increase food productivity to meet the growing food demand. Use of nanocarriers in agro-practices for sustainable farming contributes to achieving up to 75% nutrient delivery for a prolonged period to maintain nutrient availability in soil for plants in adverse soil conditions.
  • 1.1K
  • 29 Sep 2022
Topic Review
Zeolite/Pharmaceuticals System
Zeolites belong to aluminosilicate microporous solids, with strong and diverse catalytic activity, which makes them applicable in almost every kind of industrial process, particularly thanks to their eco-friendly profile. Another crucial characteristic of zeolites is their tremendous adsorption capability. Therefore, it is self-evident that the widespread use of zeolites is in environmental protection, based primarily on the adsorption capacity of substances potentially harmful to the environment, such as pharmaceuticals, pesticides, or other industry pollutants. On the other hand, zeolites are also recognized as drug delivery systems (DDS) carriers for numerous pharmacologically active agents. The enhanced bioactive ability of DDS zeolite as a drug carrying nanoplatform is confirmed, making this system more specific and efficient, compared to the drug itself. These two applications of zeolite, in fact, illustrate the importance of (ir)reversibility of the adsorption process. 
  • 1.2K
  • 11 Aug 2022
Topic Review
Zeolite Types Used in Catalytic Methane Combustion
The emission of methane leads to the increase in the methane concentration in the atmosphere, which not only wastes resources but also intensifies the greenhouse effect and brings about serious environmental problems. Catalytic combustion can completely convert methane into carbon dioxide and water at low temperatures. However, the catalytic activities of the conventional supported palladium catalysts (e.g., Pd/Al2O3 and Pd/ZrO2) are easy to decrease or the two catalysts can even be deactivated under actual harsh reaction conditions (high temperatures, steam- and sulfur dioxide-containing atmospheres, etc.). Noble metal catalysts supported on zeolites with ordered pores and good thermal stability have attracted much attention. 
  • 359
  • 08 Sep 2023
Topic Review
Zeolite Synthesis and the Crystallization Process
Zeolites, as a class of crystalline minerals, find a wide range of applications in various fields, such as catalysis, separation, and adsorption. These materials have also been developed for advanced applications, such as gas storage, medical applications, magnetic adsorption, and zeolitic-polymeric membranes. To effectively design zeolites for such intriguing applications, it is crucial to intelligently adjust their crystal size, morphology, and defect population in relation to crystal perfection. Optimizing these fundamental parameters necessitates a deep understanding of zeolite formation mechanisms, encompassing the thermodynamics and kinetics of nucleation steps as well as crystallite growth. 
  • 257
  • 31 Jul 2023
Topic Review
Zend Framework
Zend Framework (ZF) is an open source, object-oriented web application framework implemented in PHP 7 and licensed under the New BSD License. The framework is basically a collection of professional PHP-based packages. The framework uses various packages by the use of Composer as part of its package dependency managers; some of them are PHPUnit for testing all packages, Travis CI for continuous Integration Services. Zend Framework provides to users a support of the Model View Controller (MVC) in combination with Front Controller solution. MVC implementation in Zend Framework has five main areas. The router and dispatcher functions to decide which controller to run based on data from URL, and controller functions in combination with the model and view to develop and create the final web page. On 17 April 2019 it was announced that the framework is transitioning into an open source project hosted by the Linux Foundation to be known as Laminas.
  • 1.6K
  • 01 Nov 2022
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