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Topic Review
Ventilation-Perfusion Mismatch in the Acute Respiratory Distress Syndrome
Acute respiratory distress syndrome (ARDS) is a heterogenous condition that is characterized by the development of inflammatory pulmonary edema and life-threatening hypoxemia, and it accounts for nearly 25% of patients who require mechanical ventilation. Acute respiratory distress syndrome (ARDS) remains an important clinical challenge with a mortality rate of 35–45%. It is being increasingly demonstrated that the improvement of outcomes requires a tailored, individualized approach to therapy, guided by a detailed understanding of each patient’s pathophysiology. In patients with ARDS, disturbances in the physiological matching of alveolar ventilation (V) and pulmonary perfusion (Q) (V/Q mismatch) are a hallmark derangement. The perfusion of collapsed or consolidated lung units gives rise to intrapulmonary shunting and arterial hypoxemia, whereas the ventilation of non-perfused lung zones increases physiological dead-space, which potentially necessitates increased ventilation to avoid hypercapnia.
  • 3.1K
  • 12 Jan 2023
Topic Review
Technological Trends and Engineering Issues on Vertical Farms
Vertical farming has emerged as a promising solution to cope with increasing food demand, urbanization pressure, and limited resources and to ensure sustainable year-round urban agriculture. Vertical farming is a modern agricultural approach that offers exceptional space efficiency, in contrast to conventional farming methods that often result in water wastage and land degradation. The key advantages of vertical farming include the recirculation of freshwater to minimize waste, the optimization of growth conditions for steady year-round harvests, and the ability to sidestep seasonal limitations. These urban-based farms employ advanced technologies to reduce costs by decreasing the need for transportation and labor expenses. 
  • 3.1K
  • 18 Dec 2023
Topic Review
Thyme
A perennial wild shrub from the Lamiaceae family and native to the Mediterranean region, thyme is considered an important wild edible plant studied for centuries for its unique importance in the food, pharmaceutical, and cosmetic industry. Thyme is loaded with phytonutrients, minerals and vitamins. It is pungent in taste, yet rich in moisture, proteins, crude fiber, minerals and vitamins. Its chemical composition may vary with geographical location but is mainly composed of flavonoids and antioxidants.
  • 3.1K
  • 07 Jun 2022
Topic Review
Sodium Cyclamate
Sodium cyclamate (sweetener code 952) is an artificial sweetener. It is 30–50 times sweeter than sucrose (table sugar), making it the least potent of the commercially used artificial sweeteners. It is often used with other artificial sweeteners, especially saccharin; the mixture of 10 parts cyclamate to 1 part saccharin is common and masks the off-tastes of both sweeteners. It is less expensive than most sweeteners, including sucralose, and is stable under heating. Safety concerns led to it being banned in a few countries, though the European Union considers it safe.
  • 3.1K
  • 08 Oct 2022
Topic Review
Commonwealth
A commonwealth is a traditional English term for a political community founded for the common good. Historically it has sometimes been synonymous with "republic". The noun "commonwealth", meaning "public welfare general good or advantage", dates from the 15th century. Originally a phrase (the common-wealth or the common wealth – echoed in the modern synonym "public wealth") it comes from the old meaning of "wealth", which is "well-being", and is itself a loose translation of the Latin res publica (republic). The term literally meant "common well-being". In the 17th century, the definition of "commonwealth" expanded from its original sense of "public welfare" or "commonweal" to mean "a state in which the supreme power is vested in the people; a republic or democratic state". The term evolved to become a title to a number of political entities. Three countries – Australia , the Bahamas, and Dominica – have the official title "Commonwealth", as do four U.S. states and two U.S. territories. Since the early 20th century, the term has been used to name some fraternal associations of nations, most notably the Commonwealth of Nations, an organization primarily of former territories of the British Empire, which is often referred to as simply "the Commonwealth".
  • 3.1K
  • 10 Nov 2022
Topic Review
UI GreenMetric and Sustainability at Universities
The concept of sustainability has become more important, especially as a result of the depletion of energy resources and increasing environmental concerns. UI GreenMetric ranks universities based on sustainability, environmental, and energy concerns, addressing issues of environmental pollution, food and water scarcity, and energy supply.
  • 3.1K
  • 21 Aug 2023
Topic Review
Metastatic Dissemination in Lung Carcinogenesis
The tumor microenvironment plays a key role in the progression of lung tumorigenesis, progression, and metastasis. Recent data reveal that disseminated tumor cells (DTCs) appear to play a key role in the development and progression of lung neoplasiaby driving immune system dysfunction and established immunosuppression, which is vital for evading the host immune response.
  • 3.1K
  • 11 Aug 2022
Topic Review
Major Losses in Wheat Combine Harvester Operation
Wheat harvesting is one of the most important links in the whole wheat production process. In China, the wheat planting areas are wide, and the patterns are diversified. In addition, the problem of harvest losses caused by the numerous brands and low performance of domestic combine harvesters has always existed. Any losses during harvesting will result in less income for the farmers.
  • 3.1K
  • 28 Nov 2022
Topic Review
International Council of Societies of Industrial Design
The International Council of Societies of Industrial Design (Icsid) was founded in 1957 from a group of international organizations focused on industrial design. Today Icsid is a worldwide society that promotes better design around the world, and has since been renamed the World Design Organization in January 2017. Today, WDO includes over 140 member organizations in more than 40 nations, representing an estimated 150,000 designers. The primary aim of the association is to advance the discipline of industrial design at an international level. To do this, WDO undertakes a number of initiatives of global appeal to support the effectiveness of industrial design in an attempt to address the needs and aspirations of people around the world, to improve the quality of life, as well as help to improve the economy of nations throughout the world. WDO holds United Nations Special Consultative Status which empowers them to make change, and works towards addressing the United Nations Sustainable Development Goals.
  • 3.1K
  • 29 Nov 2022
Topic Review
Botulinum Neurotoxin Injection for Wrinkles in Nose Region
As wrinkle removal using BoNT is being performed more often, the adverse effects, such as paralysis of the nearby muscles, diplopia, ptosis, and samurai eyebrows have been reported. When treating wrinkles with BoNT in the nasal region, significant problems, such as diplopia may result from unintended paralysis of the rectus inferior or medialis. To prevent these side effects, the injection should be administered at an anatomically accurate location of the targeting muscle, and the initial treatment should be at a reduced dosage.
  • 3.1K
  • 18 May 2022
Topic Review
Almond By-Products
Almond (Prunus dulcis(Mill.) D. A. Webb, Prunus amygdalus Batch, or Amygdalus communis L.) constitutes the most produced nut worldwide, thanks to its exceptional nutritional composition, including low sugar content, high levels of proteins, unsaturated fatty acids, vitamins, and minerals, as well as health-enhancing phytochemicals.
  • 3.1K
  • 18 Aug 2021
Topic Review
Solution-Processed Organic Phototransistors and Their Recent Developments
Today, more disciplines are intercepting each other, giving rise to “cross-disciplinary” research. Technological advancements in material science and device structure and production have paved the way towards development of new classes of multi-purpose sensory devices. Organic phototransistors (OPTs) are photo-activated sensors based on organic field-effect transistors that convert incident light signals into electrical signals. The organic semiconductor (OSC) layer and three-electrode structure of an OPT offer great advantages for light detection compared to conventional photodetectors and photodiodes, due to their signal amplification and noise reduction characteristics. Solution processing of the active layer enables mass production of OPT devices at significantly reduced cost. The chemical structure of OSCs can be modified accordingly to fulfil detection at various wavelengths for different purposes. Organic phototransistors have attracted substantial interest in a variety of fields, namely biomedical, medical diagnostics, healthcare, energy, security, and environmental monitoring. Lightweight and mechanically flexible and wearable OPTs are suitable alternatives not only at clinical levels but also for point-of-care and home-assisted usage.
  • 3.1K
  • 27 Jan 2022
Topic Review
High-Dynamic-Range Imaging
In photography and videography, HDR or high-dynamic-range imaging is the set of techniques used to reproduce a greater range of luminosity than that which is possible with standard photographic techniques. Standard techniques allow differentiation only within a certain range of brightness. Outside this range, no features are visible because in the brighter areas everything appears pure white, and pure black in the darker areas. The ratio between the maximum and the minimum of the tonal value in an image is known as the dynamic range. HDR is useful for recording many real-world scenes containing very bright, direct sunlight to extreme shade, or very faint nebulae. High-dynamic-range (HDR) images are often created by capturing and then combining several different, narrower range, exposures of the same subject matter. The two primary types of HDR images are computer renderings and images resulting from merging multiple low-dynamic-range (LDR) or standard-dynamic-range (SDR) photographs. HDR images can also be acquired using special image sensors, such as an oversampled binary image sensor. Due to the limitations of printing and display contrast, the extended luminosity range of input HDR images has to be compressed to be made visible. The method of rendering an HDR image to a standard monitor or printing device is called tone mapping. This method reduces the overall contrast of an HDR image to facilitate display on devices or printouts with lower dynamic range, and can be applied to produce images with preserved local contrast (or exaggerated for artistic effect). "HDR" may refer to the overall process, to the HDR imaging process, or to HDR imaging represented on a low-dynamic-range display such as a screen or standard .jpg image.
  • 3.1K
  • 28 Oct 2022
Topic Review
Influence of Mindfulness on Men’s Sexual Activity
Mindfulness practice and mindfulness-based interventions are widely known, especially for women’s sexuality. The practice of mindfulness favours different variables of male sexuality, such as satisfaction and sexual functioning or genital self-image. Mindfulness-based interventions represent a valuable and promising contribution.
  • 3.1K
  • 06 Mar 2023
Topic Review Peer Reviewed
History of Medical Sociology
Medical sociology is an applied research subfield within the field of sociology that was developed in the 1800s. It uses theories and research to examine the social, cultural, and political factors associated with health, illness, and healthcare and to provide solutions to social problems associated with aspects of health, illness, and healthcare.
  • 3.1K
  • 12 Sep 2025
Topic Review
Sodium Alginate
Alginian sodu (Na-Alg) jest rozpuszczalnym w wodzie, obojętnym i liniowym polisacharydem. Jest pochodną kwasu alginowego, który zawiera kwasy 1,4-β-d-mannuronowy (M) i α-l-guluronowy (G) i ma wzór chemiczny (NaC6H7O6). Wykazuje właściwości rozpuszczalne w wodzie, nietoksyczne, biokompatybilne, biodegradowalne i nieimmunogenne. Był używany do różnych zastosowań biomedycznych, wśród których najbardziej obiecujące są dostarczanie leków, dostarczanie genów, opatrywanie ran i ich gojenie.
  • 3.1K
  • 02 Feb 2021
Topic Review
International Adoption
International adoption (also referred to as intercountry adoption or transnational adoption) is a type of adoption in which an individual or couple becomes the legal and permanent parent(s) of a child who is a national of a different country. In general, prospective adoptive parents must meet the legal adoption requirements of their country of residence and those of the country whose nationality the child holds. International adoption is not the same thing as transcultural or interracial adoption. However, the fact is that a family will often become a transcultural or interracial family upon the adoption of a child internationally. The laws of countries vary in their willingness to allow international adoptions. Some countries have established rules and procedures for international adoptions, while other countries expressly forbid it. Various countries, notably many African nations, have extended residency requirements for adoptive parents that, in effect, rule out most international adoptions.
  • 3.1K
  • 15 Nov 2022
Topic Review
Gabapentin-Associated Movement Disorders
Gabapentin (GBP) is U.S. FDA-approved for the adjunctive treatment of focal seizures and the treatment of postherpetic neuralgia. GBP also exhibits analgesic properties, often used as the first line in managing neuropathic pain. GBP-induced movement disorders are under-recognized adverse drug reactions. They are commonly not discussed with patients, and their sudden occurrence can lead to misdiagnosis of a “seizure-like” condition. Also, first-contact physicians might treat them as seizures or psychiatric comorbidities, leading to unnecessary tests and aggressive management.
  • 3.1K
  • 12 Sep 2023
Topic Review
UAVs in the U.S. Military
As of January 2014, the U.S. military operates a large number of unmanned aerial systems (UAVs or Unmanned Air Vehicles): 7,362 RQ-11 Ravens; 990 AeroVironment Wasp IIIs; 1,137 AeroVironment RQ-20 Pumas; and 306 RQ-16 T-Hawk small UAS systems and 246 Predators and MQ-1C Grey Eagles; 126 MQ-9 Reapers; 491 RQ-7 Shadows; and 33 RQ-4 Global Hawk large systems. The military role of unmanned aircraft systems is growing at unprecedented rates. In 2005, tactical- and theater-level unmanned aircraft alone had flown over 100,000 flight hours in support of Operation Enduring Freedom and Operation Iraqi Freedom, in which they are organized under Task Force Liberty in Afghanistan and Task Force ODIN in Iraq. Rapid advances in technology are enabling more and more capability to be placed on smaller airframes, which is spurring a large increase in the number of Small Unmanned Aircraft Systems (SUAS) being deployed on the battlefield. The use of SUAS in combat is so new that no formal DoD wide reporting procedures have been established to track SUAS flight hours. As the capabilities grow for all types of UAS, nations continue to subsidize their research and development, leading to further advances and enabling them to perform a multitude of missions. UAS no longer only perform intelligence, surveillance, and reconnaissance missions, although this still remains their predominant type. Their roles have expanded to areas including electronic attack, drone strikes, suppression or destruction of enemy air defense, network node or communications relay, combat search and rescue, and derivations of these themes. These UAS range in cost from a few thousand dollars to tens of millions of dollars, with aircraft ranging from less than one pound to over 40,000 pounds.
  • 3.1K
  • 14 Oct 2022
Topic Review
Strain Rate Sensitivity
Strain rate is a parameter related with dynamic loading phenomena, which are common in industrial applications.
  • 3.1K
  • 06 Sep 2021
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