The Gram-negative periodontal pathogen Actinobacillus actinomycetemcomitans forms an extremely tenacious biofilm on solid surfaces such as glass, plastic and hydroxyapatite. This characteristic is likely to be important for colonization of the oral cavity and initiation of a potentially devastating form of periodontal disease. Genetic analysis has revealed a cluster of tad genes responsible for...

T hirty years after the end of the Vietnam War, the United States and its Army again find themselves confronted with a tenacious insurgency, this time in Iraq. Given our decidedly mixed record in counterinsurgency operations, we tend to look elsewhere for successful models. Many look to the British, especially their exemplary and thorough victory in Malaya, to provide such a model. Commentators...

Despite the variety of novel facial rejuvenation technologies available today, the reference standard for correction of the senescent jaw line and neck remains rhytidectomy. This article describes the purse-string facelift, a vertical facelift that moves away from traditional techniques that use a horizontal vector of subcutaneous muscle-aponeurotic system repositioning. The vertical facelift c...

Mucus in the gastrointestinal tract remains a tenacious barrier that restricts the passage of many orally administered compounds into the GIT's epithelial layer and consequently into the systemic circulation. This results in significant decreases in the oral bioavailability of many therapeutic molecules. Nanoparticles offer an avenue to surpass this mucus barrier. They can be used as drug carri...

The survey on the willpower of Chinese professional volleyball players shows that Chinese female volleyball players are more tenacious than male players, while male players are better in self-control. Willpower of volleyball players is independent with training duration and individual skill level of the players. The ace spiker is more clear in target than the setter and auxiliary setter; the se...

The Mauna Loa carbon dioxide record is an iconic symbol of the human capacity to alter the planet. Yet this record would not have been possible without the remarkable work of one man, Charles David Keeling. We describe three emergent themes that characterized his work: (1) his desire to study and understand the processes that control atmospheric CO2 and the global carbon cycle, (2) his campaign...

Global health and neoliberalism are becoming increasingly intertwined as organizations utilize markets and profit motives to solve the traditional problems of poverty and population health. I use field work conducted over 14 months in a global health technology company to explore how the promise of neoliberalism re-envisions humanitarian efforts. In this company's vaccine refrigerator project, ...

Recent theories on natural and synthetic consciousness overlook the geometric structure necessary for awareness of 3-dimensional space, as strikingly illustrated by left-neglect disorder. Furthermore, awareness of 3-dimensional space entails some surprisingly tenacious optical illusions, as demonstrated by an experiment in the text. Awareness of linear time is also crucial and complex. As a con...

Sialorrhoea is a common and problematic symptom that arises from a range of neurological conditions associated with bulbar or facial muscle dysfunction. Drooling can significantly affect quality of life due to both physical complications such as oral chapping, and psychological complications such as embarrassment and social isolation. Thicker, tenacious oral and pharyngeal secretions may result...

Metaphysics seeks an account of fundamental reality as it is independent any observer or point view. As such, one problem faces that such necessarily created by some from Does this mean metaphysics thereby inherently impossible? Or incomplete? I argue possible and can aim at completeness, but must acknowledge the contributions made human perspective on reality, cognition, features conceptual li...