Dental Service Organization affiliation: Understanding key aspects of State Dental Practice Act compliance.

Dental Service Organizations (DSOs) are an increasingly visible and available practice option for new dental graduates. While guidance has been published to help dental students make informed decisions when considering a DSO affiliation, they have not focused on the complexities of assessing compliance with controlling state laws. Accordingly, this Perspectives article provides a concise summary of the common components of state regulatory provisions across the United States to support an understanding of the corporate practice of dentistry and compliance considerations.

Mobilization of As, Fe, and Mn from Contaminated Sediment in Aerobic and Anaerobic Conditions: Chemical or Microbiological Triggers?

We integrated aqueous chemistry, spectroscopy, and microbiology techniques to identify chemical and microbial processes affecting the release of arsenic (As), iron (Fe), and manganese (Mn) from contaminated sediments exposed to aerobic and anaerobic conditions. The sediments were collected from Cheyenne River Sioux Tribal lands in South Dakota, which has dealt with mining legacy for several decades. The range of concentrations of total As measured from contaminated sediments was 96 to 259 mg kg, which co-occurs with Fe (21 000-22 005 mg kg) and Mn (682-703 mg kg).

Arsenic Accumulation in Hydroponically Grown (Little Bluestem) Amended with Root-Colonizing Endophytes.

We integrated microscopy, spectroscopy, culturing and molecular biology, and aqueous chemistry techniques to evaluate arsenic (As) accumulation in hydroponically grown inoculated with endophytic fungi. grows in historically contaminated sediment in the Cheyenne River Watershed and was used for laboratory experiments with As(V) ranging from 0 to 2.5 mg L at circumneutral pH.

What guidance does HIPAA offer to providers considering familial risk notification and cascade genetic testing?

Background: It is unclear how the Health Insurance Portability and Accountability Act (HIPAA) should be interpreted in the context of sharing of genomic information between family members.

Methods: The authors analyzed the HIPAA Privacy Rule, reviewed the literature and constructed a clinical scenario to inform how HIPAA can be interpreted for multiple forms of patient- and provider-mediated genetic risk notification.

Results: Under HIPAA, healthcare providers can lawfully notify relatives to recommend genetic risk assessment using multiple approaches, including supporting the patient telling their own relatives, contacting relatives directly with the patient's authorization, or contacting a relative's provider directly.

Emerging investigator series: entrapment of uranium-phosphorus nanocrystals inside root cells of plants from a mine waste site.

We investigated the mechanisms of uranium (U) uptake by Tamarix (salt cedars) growing along the Rio Paguate, which flows throughout the Jackpile mine near Pueblo de Laguna, New Mexico. Tamarix were selected for this study due to the detection of U in the roots and shoots of field collected plants (0.6-58.

Modeling a Carrington-scale Stellar Superflare and Coronal Mass Ejection from .

Observations from the mission have revealed frequent superflares on young and active solar-like stars. Superflares result from the large-scale restructuring of stellar magnetic fields, and are associated with the eruption of coronal material (a coronal mass ejection, or CME) and energy release that can be orders of magnitude greater than those observed in the largest solar flares. These catastrophic events, if frequent, can significantly impact the potential habitability of terrestrial exoplanets through atmospheric erosion or intense radiation exposure at the surface.

Effect of bicarbonate and phosphate on arsenic release from mining-impacted sediments in the Cheyenne River watershed, South Dakota, USA.

The mobilization of arsenic (As) from riverbank sediments affected by the gold mining legacy in north-central South Dakota was examined using aqueous speciation chemistry, spectroscopy, and diffraction analyses. Gold mining resulted in the discharge of approximately 109 metric tons of mine waste into Whitewood Creek (WW) near the Homestake Mine and Cheyenne River at Deal Ranch (DR), 241 km downstream. The highest concentrations of acid-extractable As measured from solid samples was 2020 mg kg-1 at WW and 385 mg kg-1 at DR.

The Role of Twist in Kinked Flux Rope Emergence and Delta-spot Formation.

It has been observationally well established that the magnetic configurations most favorable for producing energetic flaring events reside in -spots, a class of sunspots defined as having opposite-polarity umbrae sharing a common penumbra. They are frequently characterized by extreme compactness, strong rotation, and anti-Hale orientation. Numerous studies have shown that nearly all of the largest solar flares originate in -spots, making the understanding of these structures a fundamental step in predicting space weather.

EVIDENCE FOR THE MAGNETIC BREAKOUT MODEL IN AN EQUATORIAL CORONAL-HOLE JET.

Small, impulsive jets commonly occur throughout the solar corona, but are especially visible in coronal holes. Evidence is mounting that jets are part of a continuum of eruptions that extends to much larger coronal mass ejections and eruptive flares. Because coronal-hole jets originate in relatively simple magnetic structures, they offer an ideal testbed for theories of energy buildup and release in the full range of solar eruptions.

Reconnection-Driven Magnetohydrodynamic Turbulence in a Simulated Coronal-Hole Jet.

Extreme-ultraviolet and X-ray jets occur frequently in magnetically open coronal holes on the Sun, especially at high solar latitudes. Some of these jets are observed by white-light coronagraphs as they propagate through the outer corona toward the inner heliosphere, and it has been proposed that they give rise to microstreams and torsional Alfvén waves detected in the solar wind. To predict and understand the signatures of coronal-hole jets, we have performed a detailed statistical analysis of such a jet simulated with an adaptively refined magnetohydrodynamics model.

A model for straight and helical solar jets: II. Parametric study of the plasma beta.

Context: Jets are dynamic, impulsive, well-collimated plasma events that develop at many different scales and in different layers of the solar atmosphere.

Aims: Jets are believed to be induced by magnetic reconnection, a process central to many astrophysical phenomena. Within the solar atmosphere, jet-like events develop in many different environments, e.

A universal model for solar eruptions.

Magnetically driven eruptions on the Sun, from stellar-scale coronal mass ejections to small-scale coronal X-ray and extreme-ultraviolet jets, have frequently been observed to involve the ejection of the highly stressed magnetic flux of a filament. Theoretically, these two phenomena have been thought to arise through very different mechanisms: coronal mass ejections from an ideal (non-dissipative) process, whereby the energy release does not require a change in the magnetic topology, as in the kink or torus instability; and coronal jets from a resistive process involving magnetic reconnection. However, it was recently concluded from new observations that all coronal jets are driven by filament ejection, just like large mass ejections.

Three-Dimensional Simulations of Tearing and Intermittency in Coronal Jets.

Observations of coronal jets increasingly suggest that local fragmentation and intermittency play an important role in the dynamics of these events. In this work we investigate this fragmentation in high-resolution simulations of jets in the closed-field corona. We study two realizations of the embedded-bipole model, whereby impulsive helical outflows are driven by reconnection between twisted and untwisted field across the domed fan plane of a magnetic null.

Solar Coronal Jets: Observations, Theory, and Modeling.

Chromospheric and coronal jets represent important manifestations of ubiquitous solar transients, which may be the source of significant mass and energy input to the upper solar atmosphere and the solar wind. While the energy involved in a jet-like event is smaller than that of "nominal" solar flares and Coronal Mass Ejections (CMEs), jets share many common properties with these major phenomena, in particular, the explosive magnetically driven dynamics. Studies of jets could, therefore, provide critical insight for understanding the larger, more complex drivers of the solar activity.

Rescue Medicine for Epilepsy in Education Settings.

Children and adolescents with epilepsy may experience prolonged seizures in school-associated settings (eg, during transportation, in the classroom, or during sports activities). Prolonged seizures may evolve into status epilepticus. Administering a seizure rescue medication can abort the seizure and may obviate the need for emergency medical services and subsequent care in an emergency department.

School Food Allergy and Anaphylaxis Management for the Pediatrician--Extending the Medical Home with Critical Collaborations.

Community pediatricians, working in consultation with allergists, create a medical home that is the central focus of care for the child with life-threatening food allergies. They participate in coordinating mutual and critical collaborations within schools that support families and children. They can provide leadership and guidance to both families and schools to safeguard children and adolescents, thereby extending the medical home goals into the school setting.

Head lice.

Head lice infestation is associated with limited morbidity but causes a high level of anxiety among parents of school-aged children. Since the 2010 clinical report on head lice was published by the American Academy of Pediatrics, newer medications have been approved for the treatment of head lice. This revised clinical report clarifies current diagnosis and treatment protocols and provides guidance for the management of children with head lice in the school setting.

Returning to learning following a concussion.

Following a concussion, it is common for children and adolescents to experience difficulties in the school setting. Cognitive difficulties, such as learning new tasks or remembering previously learned material, may pose challenges in the classroom. The school environment may also increase symptoms with exposure to bright lights and screens or noisy cafeterias and hallways.

Role of the school physician.

The American Academy of Pediatrics recognizes the important role physicians play in promoting the optimal biopsychosocial well-being of children in the school setting. Although the concept of a school physician has existed for more than a century, uniformity among states and school districts regarding physicians in schools and the laws governing it are lacking. By understanding the roles and contributions physicians can make to schools, pediatricians can support and promote school physicians in their communities and improve health and safety for children.

Policy statement—Climatic heat stress and exercising children and adolescents.

Results of new research indicate that, contrary to previous thinking, youth do not have less effective thermoregulatory ability, insufficient cardiovascular capacity, or lower physical exertion tolerance compared with adults during exercise in the heat when adequate hydration is maintained. Accordingly, besides poor hydration status, the primary determinants of reduced performance and exertional heat-illness risk in youth during sports and other physical activities in a hot environment include undue physical exertion, insufficient recovery between repeated exercise bouts or closely scheduled same-day training sessions or rounds of sports competition, and inappropriately wearing clothing, uniforms, and protective equipment that play a role in excessive heat retention. Because these known contributing risk factors are modifiable, exertional heat illness is usually preventable.

Why all prescribed medications are not taken: results from a survey of chronic dialysis patients.

Although medication non adherence is common in all populations, including those on chronic dialysis, the reasons for medication noncompliance in dialysis patients have rarely been examined. We surveyed 54 chronic dialysis patients (15 on peritoneal dialysis, 39 on hemodialysis), asking about their social and financial situations, medication coverage, and reasons for possibly not obtaining all prescribed medications. The study population was 56% female, 52% African American, 67% over 50 years of age, 27% diabetic, and 61% on dialysis for more than 2 years.