Abstract: A rope anchor with a J-shaped a body having a hook and spine. The end of the spine has an attachment hole for a rope and an elongated, teardrop-shaped rope slot that is either enclosed or gated. The gate is biased closed to span the open side of the rope slot and pushed opened to allow access for a rope. A tip, composed of a flat chip of metallic material, fits into a slot at the end of the hook. The tip is generally triangular with two or three sharp corners, or square or rectangular with four sharp corners. The slot orients the tip so that only one of the sharp corners is exposed, or so that two adjacent sharp corners are exposed. When an exposed sharp corner is not suitable for use, the tip can be reoriented to expose a different sharp corner.

Abstract: Zr-based metal-organic frameworks (Zr-MOFs) independently comprising the following formula and/or structure: Zr6O4(OH)4(polycarboxylate)6, and methods of making and using same. In various examples, a method produces a Zr-MOF or Zr-MOFs. In various examples, a Zr-MOF is a hydrogen sulfide (H2S)-loaded Zr-MOF. In various examples, a method produces a (H2S)-loaded Zr-MOF or (H2S)-loaded Zr-MOF. In various examples, a Zr-MOF or Zr-MOFs is/are used to deliver H2S to an aqueous environment, a solvent, or the like. In various examples, a Zr-MOF or Zr-MOFs is/are used to deliver H2S to an aqueous environment, a solvent, or the like. In various examples, a Zr-MOF or Zr-MOFs is/are used to deliver H2S to an individual, such as, for example, an individual suffering from or at risk of an ischemia-reperfusion injury, inflammation, a wound, or the like, or any combination thereof.