BACKGROUND Anatomic dead space (also called airway or tracheal dead space) is the part of the tidal volume that does not participate in gas exchange. Some contemporary ventilation protocols, such as the Acute Respiratory Distress Syndrome Network protocol, call for smaller tidal volumes than were traditionally delivered. With smaller tidal volumes, the percentage of each delivered breath that i...

PURPOSE To compare the accuracy of marginal and internal adaptation of zirconia (Zr) copings fabricated on anatomic (A), semi-anatomic (SA) and non-anatomic (NA) occlusal surface preparations. MATERIALS AND METHODS 45 extracted bicuspid teeth were prepared for receiving zirconia crowns, with different occlusal preparation designs A=15, SA=15 & NA=15. The Zr copings were fabricated by using CA...

Melanocytic nevi occurring in lymph nodes create diagnostic difficulty by mimicking metastases. Few studies describe nodal nevi in sentinel lymph nodes (SLNs) excised for melanoma. We evaluated 72 cases in which patients had undergone SLN biopsy for melanoma. Lymph nodes and cutaneous melanomas were evaluated according to a standard protocol. Nodal nevi were identified in 8 patients (11%). Of t...

Osteosarcoma is the most common primary tumor of bone, yet its absolute incidence among malignant tumors is low. Within its strict histologic definition, osteosarcoma comprises a family of lesions with considerable diversity in histologic features and grade. Its prognosis is dependent not only on these parameters but also on its anatomic site. It may occur inside the bones (in the intramedullar...

BACKGROUND Anatomic repair of tendon ruptures is an important goal of surgical treatment. There are limited data on the triceps brachii insertion, footprint, and anatomic reconstruction of the distal triceps tendon. HYPOTHESIS An anatomic repair of distal triceps tendon ruptures more closely imitates the preinjury anatomy and may result in a more durable repair. STUDY DESIGN Descriptive and...

Abstract Metaphosphimates are possible precursors for oxonitridophosphates. A new polymorph of trimetaphosphimic acid, in fact an oxonium trimetaphosphimate monohydrate, crystallizes the monoclinic space group P 2 1 / c . It exhibits coin‐roll‐like stacks H (PO NH) 3 − anions a rectangular pattern, whereas these form hexagonal arrangement known polymorph. Ring conformation analysis reveals stat...

Chemically responsive polymers are macromolecules that respond to local variations of the chemical composition solution by changing their conformation, with notable examples including polyelectrolytes, proteins, and DNA. The polymer conformation changes can occur in response pH, ionic strength, or concentration a generic solute interacts polymer. These stimuli lead drastic flexibility even trig...

How quickly a protein diffuses in liquid depends directly on its radius, which changes as the protein’s conformation fluctuates.

Introduction: Regarding the anatomic variety in the anterior mandible it is necessary to obtain adequate information about the vital structures in this area to protect them in dental surgeries and preventing injuries that might occur afterwards. The aim of this study is to describe anatomic characteristics of mental foramen and anterior loop on CBCT images.  Materials and Methods: On CBCT imag...